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Document Number: NL ISO 7150 1 : 2009

This International Standard specifies requirements for six preferred sizes of plastics filter funnels up to 200 mm in diameter suitable for laboratory use.

Water quality -- Determination of ammonium -- Part 1: Manual spectrometric method

Document Number: NL ISO 7197 : 2009

1.1 Substance determined This part of ISO 7150 specifies a manual spectrometric method for the determination of ammonium in water. NOTE — An automated spectrometric method for the determination of ammonium will form the subject of ISO 7150/2. 1.2 Type of sample The method is applicable to the analysis of potable water, and most raw and waste waters. Application to excessively coloured or saline waters shall be preceded by distillation (see clause 10). For interferences, see clause 9. 1.3 Range An ammonium nitrogen concentration, ϱN of up to 1 mg/l, using the maximum test portion of 40 ml, can be determined. Much higher concentrations can be determined by taking smaller test portions. 1.4 Limit of detection1) When using cells of optical path length 40 mm and a 40 ml test portion, the limit of detection lies within the range ϱN = 0,003 to 0,008 mg/l. 1.5 Sensitivity1) Using a 40 ml test portion and a cell of optical path length 40 mm, ϱN = 0,200 mg/l gives an absorb

Neurosurgical implants - Sterile, single-use hydrocephalus shunts and components

Document Number: NL ISO 7393 1 : 2009

This International Standard specifies safety and performance requirements for sterile, single-use non-active hydrocephalus shunts and components. This includes the components used in shunts, like valves, tubes and reservoirs. This International Standard gives no recommendation concerning the superiority of a certain type of valve. For manufacturing, it defines the mechanical and technical requirements. This International Standard defines the technical information of the valve, to be given by the manufacturer. In respect to the different principles of the valve types, specific characteristics are defined for each group as declared by the manufacturer. The benefit of this International Standard for the surgeon and the patient is to understand the information given by the manufacturer and to obtain standardized information about the performance of a well working product with new design characteristics. The benefit for the manufacturer is to define the important requirements for shunts as

Water quality -- Determination of free chlorine and total chlorine -- Part 1: Titrimetric method using N,N-diethyl-1,4-phenylenediamine

Document Number: NL ISO 7393 2 : 2009

This part of ISO 7393 specifies a titrimetric method for the determination of free chlorine and total chlorine in water. Sea water and waters containing bromides and iodides comprise a group for which special procedures are required[2] The method is applicable to concentrations, in terms of chlorine (Cl2), from 0,000 4 to 0,07 mmol/l (0,03 to 5 mg/l) total chlorine and at higher concentrations by dilution of samples. For concentrations above 0,07 mmol/l, ISO 7393/3 can also be used. In annex A a procedure is presented for the differentiation of combined chlorine of the monochloramine type, combined chlorine of the dichloramine type and combined chlorine in the form of nitrogen trichloride. Several compounds influence the determination specified in this part of ISO 7393. Interferences are noted in clauses 7 and 9.

Water quality -- Determination of free chlorine and total chlorine -- Part 2: Colorimetric method using N,N-diethyl-1,4-phenylenediamine, for routine control purposes

Document Number: NL ISO 7393 3 : 2009

This document specifies a method for the determination of free chlorine and total chlorine in water, readily applicable to lab- and field-testing. It is based on measurement of the absorption, the red DPD colour complex in a photometer or the colour intensity by visual comparison of the colour with a scale of standards that is regularly calibrated. This method is appropriate for drinking water and other waters, where additional halogens like bromine, iodine and other oxidizing agents are present in almost negligible amounts. Seawater and waters containing bromides and iodides comprise a group for which special procedures are to be carried out. This method is in practice applicable to concentrations, in terms of chlorine (Cl2), from, for example, 0,000 4 mmol/l to 0,07 mmol/l (e.g. 0,03 mg/l to 5 mg/l) total chlorine. For higher concentrations, the test portion is diluted. Commonly, the method is applied as a field method with mobile photometers and commercially available ready-for-use reagents (liquid reagents, powders and tablets). It is essential that those reagents comply with minimum requirements and contain the essential reagents and a buffer system suitable to adjust the measurement solution to a pH range of typically 6,2 to 6,5. If there is doubt that water samples have uncommon pH values and/or buffer capacities, the user has to check and, if necessary, to adjust the sample pH to the required range. The pH of the sample is within the range of pH 4 and 8. Adjust, if necessary, with sodium hydroxide solution or sulfuric acid before the test. A procedure for the differentiation of combined chlorine of the monochloramine type, combined chlorine of the dichloramine type and combined chlorine in the form of nitrogen trichloride is presented in Annex A. In Annex C, a procedure is presented for the determination of free and total chlorine in drinking and other low polluted waters, for disposable planar reagent-filled cuvettes using a mesofluidic channel pump/colorimeter.

Water quality -- Determination of free chlorine and total chlorine -- Part 3: Iodometric titration method for the determination of total chlorine

Document Number: NL EN 1041 : 2009

This part of ISO 7393 specifies an iodometric titration method for the determination of total chlorine in water. The method is applicable for the measurement of concentrations in terms of chlorine (Cl2), from 0,01 mmol/1 to 0,21 mmol/l (0,71 mg/l to 15 mg/l). Several substances interfere in the determination (see clause 10). In annex B a method for direct titration is specified. This is usually applied to the determination of chlorine concentrations above 7 μmol/l (0,5 mg/l) in treated drinking water.

Information supplied by the manufacturer with medical devices

Document Number: NL ISO 1042 : 2009

This European Standard specifies requirements for information to be supplied by a manufacturer for medical devices regulated by Council Directive 90/385/EEC relating to active implantable medical devices and Council Directive 93/42/EEC concerning medical devices. It does not specify the language to be used for such information, nor does it specify the means by which the information is to be supplied. It is also intended to complement the specific requirements of the cited EU Directives on medical devices by providing guidance on means by which certain requirements can be met. If a manufacturer follows these means, they will provide a presumption of conformity with the relevant Essential Requirements regarding information to be supplied. This standard does not cover requirements for provision of information for in vitro diagnostic medical devices, which are covered by other labelling standards (see Bibliography). NOTE When national transpositions of the Directives specify the means by w

Laboratory glassware -- One-mark volumetric flasks

Sector: Metrology and Measurement. Physical Phenomena

Document Number: NL ISO 9297 : 2009

This International Standard specifies requirements for an internationally acceptable series of one-mark volumetric flasks, suitable for general laboratory purposes. The specifications in this International Standard are in conformity with ISO 384 and with OIML Recommendation No. 4.

Water quality -- Determination of chloride -- Silver nitrate titration with chromate indicator (Mohr's method)

Document Number: NL ISO 9377 2 : 2009

1.1 Application range This International Standard specifies a titration method for the determination of dissolved chloride in water. The method is applicable to the direct determination of dissolved chloride in concentrations between 5 mg/l and 150 mg/l. The working range may be extended to 400 mg/l by using a burette of larger capacity or by sample dilution. Due to many interferences the method is not applicable to heavily polluted waters of low chloride content. 1.2 Interferences Normal concentrations of common constituents of ground water, surface water and potable water do not interfere with the determination. The following substances interfere with the method — Substances forming insoluble silver compounds, such as bromides, iodides, sulfides, cyanides, hexacyanoferrates(ll) and hexacyanoferrates(lll). If necessary, bromide and iodide ions shall be determined separately, and the result of the chloride determination corrected accordingly. — Compounds forming complexes with silver ions, such as ammonium and thiosulfate ions. — Compounds which will reduce Chromate ions, including iron(ll) and sulfite ions. The interferences mentioned above will lead to high chloride values. Highly coloured or turbid solutions may obscure the end point, for example hydrated iron oxide. Table 1 — Interferences Substance Amount interfering mg/l Br− 3 I− 5 S2− 0,8 CN− 1 Fe(CN)64− 2 Fe(CN)e 3− 2 NH4 + 100 S2 O3 2− 200 SO3 2− 70 SCN− 3 CrO4 2 1 000 PO4 3− 25 Table 1 gives a summary of the concentrations of interfering compounds, in milligrams per litre, that give an increase of approximately 2 % in the result when in the presence of 70 mg/l of chloride.

Water quality -- Determination of hydrocarbon oil index -- Part 2: Method using solvent extraction and gas chromatography

Document Number: NL ISO 9174 : 2009

This part of ISO 9377 specifies a method for the determination of the hydrocarbon oil index in waters by means of gas chromatography. The method is suitable for surface water, waste water and water from sewage treatment plants and allows the determination of a hydrocarbon oil index in concentrations above 0,1 mg/l. The method is not applicable to the quantitative determination of the content of volatile mineral oil. However, on the basis of the peak pattern of the gas chromatogram, certain qualitative information on the composition of the mineral oil contamination can be derived. NOTE 1 For the determination of the mineral-oil content of soils and sediment, see ISO/TR 11046. NOTE 2 The mass concentration of animal and vegetable fat in the test sample should not exceed 150 mg/l, because at higher values the adsorption capacity of the clean-up column packing may not be sufficient. NOTE 3 In the case of highly polluted waste water, especially if containing a high amount of surfactants, a

Water quality -- Determination of chromium -- Atomic absorption spectrometric methods

Document Number: NL ISO 7886 4 : 2009

This International Standard specifies two methods for the determination of chromium in water by atomic absorption spectrometry. The two methods are covered in separate clauses as follows: — Clause 3: Determination of chromium by flame atomic absorption spectrometry; — Clause 4: Determination of chromium by electrothermal atomization atomic absorption spectrometry. Clause 3 is applicable to the analysis of water and waste water when the concentration range is between 0,5 mg/l and 20 mg/l of chromium. When the concentration is below 0,5 mg/l, the determination can be carried out after carefully evaporating an acidified sample to small volume, taking care to avoid the formation of a precipitate. NOTE The use of evaporation will increase the effect of interfering substances and therefore for concentrations below 0,1 mg/l the method in clause 4 is given. Clause 4 is applicable to the analysis of water and waste water when the concentration range is between 5 μg/l and 100 μg/l of chromium by injecting a sample volume of 20 μl. It is applicable to the determination of higher concentrations by using a smaller sample volume.

Sterile hypodermic syringes for single use - Part 4: Syringes with re-use prevention feature

Document Number: NL ISO 7887 : 2009

This part of ISO 7886 specifies requirements for sterile single-use hypodermic syringes made of plastics materials with or without needle, and intended for the aspiration of fluids or for the injection of fluids immediately after filling and of design such that the syringe can be rendered unusable after use. This part of ISO 7886 is not applicable to syringes made of glass (specified in ISO 595), auto-disable syringes for fixed dose immunization (ISO 7886-3) and syringes designed to be pre-filled. It does not address compatibility with injection fluids. Other standards can be applicable when syringes are used for any other intended purpose than those specified in this part of ISO 7886. NOTE Syringes designed to reduce the risk of needlestick injuries can also comply with this part of ISO 7886 with regard to their re-use prevention properties, but it is stressed that anti-needlestick properties of syringes are not in themselves addressed in this part of ISO 7886.

Water quality -- Examination and determination of colour

Document Number: NL ISO 7888 : 2009

This International Standard specifies three methods for the examination of colour. Section 2 specifies a method for the examination of apparent colour by visually observing a water Sample in a bottle. This gives only preliminary in- formation, for example for use in field work. Only the apparent colour tan be reported. Section 3 specifies a method for the determi- nation of the true colour of a water Sample using Optical apparatus and is applicable to raw and potable water and to industrial water of low colour. For interferences, see 3.3. Section 4 specifies a method for the determi- nation of the colour by visual comparison with hexachloroplatinate Standard solutions and may be applied to raw and drinking water. For inter- ferences, see 4.2. Under certain circumstances, strongly coloured water samples need to be diluted before examination or determination. When stating the result, it is absolutely necessary to refer to the applied method.

Water quality -- Determination of electrical conductivity

Document Number: NL ISO 7890 3 : 2009

This International Standard specifies a method for the measurement of the electrical conductivity of all types of water. Electrical conductivity tan be used to monitor the quality of a) surface waters; b) process waters c) waste waters. in water supply and treatment plants; The completeness of analysis for ionic constituents[l 10 31 tan be checked using this method. In some cases absolute values are important, in other cases only relative changes are of concern. For interferences, see clause 9.

Water quality -- Determination of nitrate -- Part 3: Spectrometric method using sulfosalicylic acid

Document Number: NL ISO 7980 : 2009

1.1 Substance determined This part of ISO 7890 specifies a method for the determination of nitrate ion in water. 1.2 Type of Sample The method is suitable for application to raw and potable water samples. 1.3 Range Up to a nitrate nitrogen concentration, @N of 0,2 mg/l using the maximum test Portion volume of 25 ml. The range tan be ex- tended upwards by taking smaller test portions. 1.4 Limit of detectionl) Using cells of Optical path length 40 mm and a 25 ml test por- tion volume the limit of detection lies within the range QN = 0,003 to 0,013 mg/l. 1.5 Sensitivityl) A nitrate nitrogen concentration of @N = 0,2 mg/l gives an ab- sorbance of about 068 unit, using a 25 ml test Portion and cells of Optical path length 40 mm. 1.6 Interferences A range of substances often encountered in water samples has been tested for possible interference with this method. Full details are given in annex A. The main potential interferents are chloride, or-thophosphate, magnesium and manganese(ll), as shown in annex A. Other tests have shown that this method will tolerate a Sample colour of up to 150 mg/l Pt providing the test Portion absorp- tion correction procedure is followed. (See 6.5.

Water quality -- Determination of calcium and magnesium -- Atomic absorption spectrometric method

Document Number: NL ISO 7981 1 : 2009

This International Standard specifies a method for the deter- mination of dissolved Calcium and magnesium by flame atomic absorption spectrometry. lt is intended for the analysis of raw and drinking waters and tan be used for waters having a Calcium content of up to 50 mg/l and a magnesium content of up to 5 mg/l. For samples containing higher concentrations of Calcium or magnesium a smaller volume of the Sample must be taken for the analysis. When using the air/acetylene flame and the dilution factor 1 in 10, as described in 6.1, the Optimum range is 3 to 50 mg/1 for Calcium and 0,9 to 5 mg/l for magnesium.

Water quality -- Determination of polycyclic aromatic hydrocarbons (PAH) -- Part 1: Determination of six PAH by high-performance thin-layer chromatography with fluorescence detection after liquid-liquid extraction

Document Number: NL ISO 7981 2 : 2009

This part of ISO 7981 specifies the determination of six selected PAH in drinking water by high-performance thin-layer chromatography with fluorescence detection after liquid-liquid extraction. The six PAH are: fluoranthene, benzo[b]fluoranthene, benzo[a]pyrene, benzo[k]fluoranthene, indeno[1,2,3-cd]pyrene, and benzo[ghi]perylene (see Table 1). A screening method (method A) is described to exclude those samples containing less than 20 % of the limit values given in References [1], [2], [3] and [4]. A quantitative method (method B) is also described, with a working range of 40 ng/l to 240 ng/l (sum of 6 PAH). Higher concentrations can be determined by using a smaller aliquot of the sample. With some modifications, this method is also applicable for the analysis of ground waters and moderately polluted surface waters.

Water quality -- Determination of polycyclic aromatic hydrocarbons (PAH) -- Part 2: Determination of six PAH by high-performance liquid chromatography with fluorescence detection after liquid-liquid extraction

Document Number: NL ISO 7875 2 : 2009

This part of ISO 7981 specifies the determination of six selected PAH in drinking, mineral and table waters and ground and surface waters in mass concentrations above 0,005 µg/l, by high-performance liquid chromatography with fluorescence detection after liquid-liquid extraction. The six PAH are: fluoranthene, benzo[b]fluoranthene, benzo[a]pyrene, benzo[k]fluoranthene, indeno[1,2,3-cd]pyrene, and benzo[ghi]perylene (see Table 1). With some modification, this method is also applicable for the analysis of moderately polluted waste waters

Water quality -- Determination of surfactants -- Part 2: Determination of non-ionic surfactants using Dragendorff reagent

Document Number: NL ISO 8165 1 : 2009

This part of IS0 7875 specifies a method for the determination of non-ionic surfactants in aqueous media using Dragendorff reagent.

Water quality -- Determination of selected monovalent phenols -- Part 1: Gas-chromatographic method after enrichment by extraction

Document Number: NL ISO 8165 2 : 2009

This part of ISO 8165 specifies a method for the determination of the phenols presented in table 1 in a concentration range from 0,1 µg/l to 1 mg/l. The concentration range depends on the nature of the phenols to be determined and on the gas chromatographic method used. Other monovalent phenols may also be analyzed according to this procedure, the applicability, however, should be investigated for each particular case. Table 1 — Phenols determinable using this method Phenol 2-Methylphenol 3-Methylphenol 4-Methylphenol 2,4-Dimethylphenol 4-Ethylphenol 2,6-Di-tert-butyl-4-methylphenol 2-Phenylphenol 2-Benzylphenol 2-Benzyl-4-methylphenol 2-Chlorophenol 3-Chlorophenol 4-Chlorophenol 4-Chloro-2-methylphenol 4-Chloro-3-methylphenol 2,4-Dichloro-3,5-dimethylphenol 2-Cyclopentyl-4-chlorophenol 6-Chlorothymol 2,3-Dichlorophenol 2,4-Dichlorophenol 2,5-Dichlorophenol 2,6-Dichlorophenol 2,4,6-Trichlorophenol 2,3,5-Trichlorophenol 2,4,5-Trichlorophenol 2,3,6-Trichlorophenol 2,3,4,5-Tetrachlorophe

Water quality -- Determination of selected monovalent phenols -- Part 2: Method by derivatization and gas chromatography

Document Number: NL ISO 8288 : 2009

This part of ISO 8165 specifies a method for the determination of phenols by gas chromatography, following pentafluorobenzoyl chloride (PFBC) derivatization. It may in particular be applied to the examination of drinking water, ground water and moderately contaminated surface water. With this method, lower limits of detection may be obtained compared with extraction procedures. Since other reactive compounds such as amines and in some cases alcohols may also react, this method is not applicable in all cases to the examination of waste water. The applicability to the examination of waste water should be investigated for each individual case. This method allows the determination of the phenols listed in Table 1 in a concentration range ≥ 0,1 μg/l. Other monovalent phenols may also be analysed using this method, but the applicability needs to be checked for each individual case. Table 1 — Phenols to which this method is applicable phenol 2-cyclopentyl-4-chlorophenol 2-methylphenol 4-chloro-2-benzylphenol 3-methylphenol 6-chloro-5-methyl-2-(1-methylethyl)phenol 4-methylphenol 2,3-dichlorophenol 2,4-dimethylphenol 2,4-dichlorophenol 4-ethylphenol 2,5-dichlorophenol 2,6-bis(1,1-dimethylethyl)-4-methylphenol 2,6-dichlorophenol 2-phenylphenol 2,4,6-trichlorophenol 2-benzylphenol 2,3,5-trichlorophenol 2-benzyl-4-methylphenol 2,4,5-trichlorophenol 2-chlorophenol 2,3,6-trichlorophenol 3-chlorophenol 2,3,4,5-tetrachlorophenol 4-chlorophenol 2,3,4,6-tetrachlorophenol 4-chloro-2-methyl phenol 2,3,5,6-tetrachlorophenol 4-chloro-3-methyl phenol pentachlorophenol 6-chloro-3-methyl phenol 2,4-dichloro-3,5-dimethyl phenol 2-chloro-4-f-butylphenol 2009 English 25000.00 0 995 1059 C NL ISO 8245 : 2009 No 13.060.50 60.60 Food Technology Water quality -- Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC) This International Standard gives guidance for the determination of total carbon (TC), total inorganic carbon (TIC) and total organic carbon (TOC) in drinking water, ground water, surface water, sea water and waste water. It also defines terms and specifies interferences, reagents, and sample pretreatment for water samples. The method described in this International Standard applies to water samples containing organic carbon content ranging from 0,3 mg/l to 1000 mg/l. The lower limit concentration is only applicable in special cases, for example drinking water, measured by highly sensitive instruments. Higher concentrations may be determined after appropriate dilution. This International Standard does not deal with the instrument-dependent specifications. Purgeable organic substances, such as benzene, toluene, cyclohexane and chloroform, can also be determined using this method. Cyanide, cyanate and particles of elemental carbon (soot), when present in the sample, can be determined together with the organic carbon."

Water quality -- Determination of cobalt, nickel, copper, zinc, cadmium and lead -- Flame atomic absorption spectrometric methods

Document Number: NL ISO 8466 1 : 2009

This International Standard specifies three methods for the determination of cobalt, nickel, copper, zinc, cadmium and lead in water by flame atomic absorption spectrometry : Section one : method A, for direct determination by flame atomic absorption spectrometry; Section two : method B, for determination by flame atomic absorption spectrometry after chelation (APDC) and extraction (MIBK); Section three : method C, for determination by flame atomic absorption spectrometry after chelation (HMAHMDC) and extraction (DIPK-xylene).

Water quality -- Calibration and evaluation of analytical methods and estimation of performance characteristics -- Part 1: Statistical evaluation of the linear calibration function

Document Number: NL ISO 8466 2 : 2009

This part of ISO 8466 describes the steps to be taken in evaluating the statistical characteristics of the linear calibration function. It is applicable to methods requiring a calibration. Further parts of this International Standard will cover the determination of limit of detection and limit of determination, the effect of interferences and other performance characteristics. It is intended especially for the evaluation of the pure analytical method and for the calculation of performance characteristics of the calibration function. In order to derive comparable analytical results and as a basis for analytical quality control the calibration and evaluation of analytical methods have to be performed uniformly.

Water quality -- Calibration and evaluation of analytical methods and estimation of performance characteristics -- Part 2: Calibration strategy for non-linear second-order calibration functions

Document Number: NL ISO 8467 : 2009

It is not always possible to accurately describe the relationship between a set of calibration points with a rectilinear curve, even by decreasing the working range. Instead of the linear regression analysis, a least-squares fit to a second-order polynomial is applied (see test for linearity in 4.1.3 of ISO 8466-1:1990[1]). Using this fit, it is possible to calculate not only the calibration function but also the confidence interval associated with it. This part of ISO 8466 is intended primarily for use in method development and may not necessarily be applicable to all routine analyses.

Water quality -- Determination of permanganate index

Document Number: NL ISO 8537 : 2009

This International Standard specifies a method for the determination of the permanganate index of water. It is primarily intended for water for human consumption and domestic use, drinking water, natural mineral water, well and table water, as well as water from swimming pools. It is used for the determination of the parameter "oxidizability". It is applicable to waters having a chloride ion concentration of less than 300 mg/l. Samples having a permanganate index over 10 mg/l should be diluted before analysis. The lower limit of the optimum range of the test is 0,5 mg/l.

Sterile single-use syringes, with or without needles, for insulin

Document Number: NL ISO 9390 : 2009

This International Standard specifies requirements and test methods for empty, sterile, single-use syringes, with or without needles, made of plastic materials and intended solely for the injection of insulin, with which the syringes are filled by the end user. This International Standard covers syringes intended for single-use only in humans and with insulins of various concentrations. The insulin syringes specified in this International Standard are intended for use (i.e. insulin injection) immediately after filling and are not intended to contain insulin for extended periods of time. This International Standard excludes single-use syringes made of glass, syringes for use with power-driven syringe pumps, syringes that are pre-filled by the manufacturer, and syringes intended to be stored after filling (e.g. in a kit intended for filling by a pharmacist)

Water quality -- Determination of borate -- Spectrometric method using azomethine-H

Document Number: NL ISO 9562 : 2009

1.1 Application range This International Standard specifies a spectrometric method for the determination of borate in water. The method is applicable to the determination of borate in concentrations between 0,01 mg and 1 mg of boron per litre. The working range may be extended by dilution. This method is applicable to potable water, and to ground, surface and saline waters that are not heavily polluted. 1.2 Interferences Interferences are unlikely when analysing drinking water. Mg, Zn, Ca, Na, K, phosphate, sulfate, and nitrate are known not to interfere. Mn, Zr, Cr, Ti, Cu, V, Al, Be, and Fe may cause high results. Interference by the presence of colouration, humic acid, and/or undissolved substances may be removed by suitable procedures (e.g. destruction of the colour, filtration through a column filled with activated carbon).

Water quality -- Determination of adsorbable organically bound halogens (AOX)

Document Number: NL IEC 60335 2 25 : 2009

This International Standard specifies a method for the direct determination of an amount of usually 10 µg/l in water of organically bound chlorine, bromine and iodine (expressed as chloride) adsorbable on activated carbon. This method is applicable to test samples (see 9.2) with concentrations of inorganic chloride ions of less than 1 g/l. Samples with higher concentrations are diluted prior to analysis. This method is also applicable to samples containing suspended solids where halogens are adsorbed onto the solid matter (e.g. insoluble halides). Filtration of the sample before analysis allows the separate determination of dissolved and particulate adsorbable organically bound halogens (AOX). Filtered samples with high inorganic chloride content can be analysed by a modified method [dissolved adsorbable organically bound halogens after solid phase extraction in waters with high salt content (SPE-AOX)] (see Annex A). However, results obtained by this modified method can differ significantly from those of the required method.

Household and similar electrical appliances – Safety – Part 2-25: Particular requirements for microwave ovens, including combination microwave ovens..

Sector: Electrical Engineering

Document Number: NL ISO 654 : 2009

Price: 50000.0000

IEC 60335-2-25:2010+A1:2014+A2:2015 deals with the safety of microwave ovens for household and similar use, their rated voltage being not more than 250 V. This standard also deals with combination microwave ovens, for which Annex AA is applicable. This standard also deals with microwave ovens intended to be used on board ships, for which Annex BB is applicable. Appliances not intended for normal household use but which nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. However, if the appliance is intended to be used professionally to process food for commercial purposes, the appliance is not considered to be for household and similar use only. The principal changes with respect to the previous edition are as follows: - the scope is modified to, cover microwave ovens on board ships, to better define seperation between "household and similar use" and "commercial use" and indicate it does not to take into account persons whose capabilities or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction and children playing with the appliance; - the intended use is defined for clarification; - the door endurance test is rationalised; - the replacement of 22.103, 22.104 and 22.105 allows interlock systems with at least one concealed door interlock as well as alternative interlock systems without concealed door interlock; - the tests on electronic door interlock systems are defined for clarification; - the pollution degree of combination microwave ovens is defined for clarification; - the thickness requirement for sheaths of visibly glowing heating elements of combination microwave ovens is defined for clarification. It is the recommendation that the content of this publication be adopted for implementation nationally not earlier than 12 months or later than 36 months from the date of publication. This consolidated version consists of the sixth edition (2010), its amendment 1 (2014) and its amendment 2 (2015). Therefore, no need to order amendments in addition to this publication.

Short solid-stem thermometers for precision use

Sector: Metrology and Measurement. Physical Phenomena

Document Number: NL ISO 655 : 2009

A basic series of liquid-in-glass solid-stem termometers not exceeding 250 mm in length for accurate measurement of temperature is specified. Temperature scale, materials, construction, marking and accuracy are described. The annex deals with a method of determing change in zero indication.

Long enclosed-scale thermometers for precision use

Sector: Metrology and Measurement. Physical Phenomena

Document Number: NL ISO 5961 : 2009

The requirements specify a series of liquid-in-glass enclosed-scale thermometers, not exceeding 375 mm in length for accurate measurement of temperature. The combination of letters and figures allocated to each thermometer of the series indicating the type is given. Temperature scale, materials, construction, markimg, and accuracy are specified. The annex deals with a method of determing change in the zero indication.

Water quality -- Determination of cadmium by atomic absorption spectrometry

Document Number: NL ISO 6058 : 2009

This International Standard specifies two methods for the determination of Cadmium: flame atomic absorp- tion spectrometfy ww (Section 2) and electrothermal atomization (AAS) (Section 3).

Water quality -- Determination of calcium content -- EDTA titrimetric method

Document Number: NL ISO 6059 : 2009

This International Standard specifies a titrimetric method using ethylenediaminetetraacetic acid (EDTA) for the determination of the calcium content of ground waters, surface waters and drinking waters. It can also be used for municipal and industrial raw waters, provided they do not contain interfering amounts of heavy metals. The method is not applicable to sea waters and other similar waters with a high concentration of salts. It is applicable to waters with calcium contents ranging from 2 to 100 mg/l (0,05 to 2,5 mmol/l). For waters containing more calcium than 100 mg/l, a diluted sample shall be used.

Water quality -- Determination of the sum of calcium and magnesium -- EDTA titrimetric method

Document Number: NL ISO 6060 : 2009

This International Standard specifies a titrimetric method using ethylenediaminetetraacetic acid (EDTA) for the determination of the sum of the calcium and magnesium concentrations in ground waters, surface waters and drinking waters. The method is not intended for effluents and waters having a high concentration of salts, such as sea waters. The lowest concentration that can be determined is 0,05 mmol/l.

Water quality -- Determination of the chemical oxygen demand

Document Number: NL ISO 12771 : 2009

This international Standard specifies a method for the determination of the chemical oxygen demand, COD, of water. It is applicable to water with a COD value of between 30 mg/l and 700 mg/l. The chloride content must not exceed 1000 mg/l. A water sample which is in accordance with these conditions is used directly for analysis. If the COD value exceeds 700 mg/l, the water sample is diluted. For greatest accuracy it is preferable that the COD value of the sample is in the range of 300 mg/l to 600 mg/l. Under the given reaction conditions, organic compounds are extensively oxidized. Excluded are compounds with certain structural elements (e.g. pyridine nucleus, quaternary nitrogen compounds). Volatile hydrophobic substances may evaporate and thus escape the oxidation. Inorganic compounds being oxidized under the reaction conditions are, for example: — bromide ions, iodide ions; — certain sulfur compounds; — nitrite ions; and — certain metal compounds. On the other hand, certain compounds may react as oxidizing agents under the reaction conditions. Depending on the use of the test results, these circumstances shall be kept in mind. For interferences, particularly from chlorides, see clause 10.

Plastics laboratory ware -- Disposable serological pipettes

Sector: Metrology and Measurement. Physical Phenomena

Document Number: NL ISO 78 2 : 2009

This International Standard specifies requirements for disposable plastics serological pipettes, gauged to deliver, suitable for general laboratory purposes.

Chemistry -- Layouts for standards -- Part 2: Methods of chemical analysis

Document Number: NL ISO 78 3 : 2009

This part of ISO 78 sets out a number of principles applicable to the layout and wording of methods of chemical analysis described in International Standards. It may also be useful for other test methods

Chemistry -- Layouts for standards -- Part 3: Standard for molecular absorption spectrometry

Document Number: NL ISO 78 4 : 2009

Establishes a layout for standard methods of analysis of solutions in the visible and near ultra-violet regions. Gives some recommendations for their presentation and wording. The layout is preceded by a clause "Therminology and definitions", which supplements the information given in ISO 6286.

Layouts for standards -- Part 4: Standard for atomic absorption spectrometric analysis

Document Number: NL ISO 651 : 2009

This part of ISO 78 establishes a layout for Standard methods of analysis using atomic absorption spectrometry and gives some recommendations for their presentation and wording.

Solid-stem calorimeter thermometers

Sector: Metrology and Measurement. Physical Phenomena

Document Number: NL ISO 652 : 2009

Specifies thermometers of the mercury-in-glass solid-stem type of short range with enamel back. They are used in bomb calorimetry and for other purposes where an accurate measurement of a change of temperature is required. They are not suited for measurement of the absolute temperature because they are not provided with auxiliary scales. The requirements specify material, construction, scale, and accuracy.

Enclosed-scale calorimeter thermometers

Sector: Metrology and Measurement. Physical Phenomena

Document Number: NL ISO 656 : 2009

The specified thermometers are of the mercury-in-glass enclosed-scale type with short range. They are used in bomb calorimetry and for other purposes where an accurate measurement of a change of temperature is required. They are not provided with auxiliary scales and are therefore not suited for measurement of the absolute temperature. The requirements specify material, construction, scale, and accuracy.

Short enclosed-scale thermometers for precision use

Sector: Metrology and Measurement. Physical Phenomena

Document Number: NL ISO 6286 : 2009

A series of liquid-in glass enclosed-scale thermometer, not exceeding 250 mm in length for accurate measurement of temperature is specified. The combination of letters and figures allocated to each thermometer of the series indicating the type is given. Temperature scale, materials, construction, marking and accuracy are specified. The annex deals with a method of determing change in the zero indication.

Molecular absorption spectrometry -- Vocabulary -- General – Apparatus

Sector: Chemical Technology

Document Number: NL ISO 6332 : 2009

This International Standard gives definitions of a certain number of terms, and some general information, relating to molecular absorption spectrometry of solutions, together with general data concerning the instruments used, and, in particular, specifies : a) the terminology to be used to characterize, by description, these instruments; b) the characteristics and qualities of an instrument, by giving a summary of the principles of certain methods of verifying them.

Water quality -- Determination of iron -- Spectrometric method using 1,10-phenanthroline

Document Number: NL ISO 6333 : 2009

This International Standard specifies a 1,10-phenanthroline spectrometric method for the determination of iron in water and waste water. Procedures are described for the determination of a) total iron (sum of dissolved and undissolved iron) : 1) direct determination, 2) determination after decomposition; b) total dissolved iron [sum of dissolved iron(II) and iron(III)]; c) determination of dissolved iron(II). The methods are applicable to the determination of iron concentrations between 0,01 and 5 mg/l. Iron concentrations above 5 mg/l may be determined after suitable dilution of the sample. For interferences see clause 10.

Water quality -- Determination of manganese -- Formaldoxime spectrometric method

Document Number: NL ISO 6382 : 2009

This International Standard specifies a formaldoxime spectrometric method for the determination of total manganese (including dissolved, suspended and organically bound manganese) in surface and drinking water. The method is applicable to the determination of manganese concentrations between 0,01 mg/l and 5 mg/l. Manganese concentrations above 5 mg/l may be determined after suitable dilution of the sample. For known possible interferences, see clause 8. NOTE— This method is not applicable to highly contaminated waters such as industrial waste water.

General method for determination of silicon content -- Reduced molybdosilicate spectrophotometric method

Document Number: NL ISO 6439 : 2009

This International Standard specifies a general method for the determination of Silicon by spectrophotometric measurement of reduced molybdosilicate. It describes a technique for the determination of the content of Silicon in a Solution. Reference should be made, for the preparation of the test Solution, to the International Standard relating to the product to be analysed, which should indicate the modifications necessary to make the method applicable to that product.

Water quality -- Determination of phenol index -- 4-Aminoantipyrine spectrometric methods after distillation

Document Number: NL ISO 6468 : 2009

1 Scope This International Standard specifies methods for determining the phenol index (3.2) in drinking waters, surface waters and waste waters. After a preliminary distillation, the test samples are analysed according to specific application as follows: method A (direct colorimetric method): this method is capable of measuring the phenol index in test samples that contain more than 0,10 mg/l in the aqueous phase (without chloroform extraction), using phenol as a standard; method B (chloroform extraction method): this method is capable of measuring the phenol index without dilution from about 0,002 mg/l to about 0,10 mg/l when the coloured end-product is extracted and concentrated in chloroform phase, using phenol as a standard. NOTES 1) The limits of detection achievable with both methods are insufficient for checking compliance with the limits given in the Directive 80/778/EEC for drinking water. 2) According to the results of a German interlaboratory trial using a method almost id

Water quality -- Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes -- Gas chromatographic method after liquid-liquid extraction

Document Number: NL ISO 6685 : 2009

This International Standard describes a method for determining certain organochlorine insecticides, polychlorinated biphenyls (PCBs) and chlorobenzenes (except the mono- and dichlorobenzenes) in drinking waters, ground waters, surface waters and waste waters. The method is applicable to samples containing up to 0,05 g/l of suspended solids. In the presence of organic matter, suspended matter and colloids, interferences are more numerous and consequently the detection limits are higher. The method described in this International Standard only gives information on specific PCB compounds but no information on the level of total PCBs. According to the types of compounds to be detected and the source of the water, the detection limits given in table 1 are applicable for the method described in this International Standard, with waters of low organic contents. Given the very low concentrations normally present in the waters, the problem of contamination is extremely important. The lower the level measured, the more precautions have to be observed; below concentrations of 10 ng/l, special care is necessary.

Chemical products for industrial use -- General method for determination of iron content -- 1,10-Phenanthroline spectrophotometric method

Document Number: NL ISO 6703 1 : 2009

This International Standard specif ies a general 1 JO-phenanthroline spectrophotometric method for the deter- mination of the iron content of Chemical products for industrial use. lt describes a technique for the determination of the content of iron in a Solution. Reference should be made, for the prepara- tion of the test Solution, to the International Standard relating to the product to be analysed, which should indicate the modifications necessary to make the method applicable to that product.

Water quality -- Determination of cyanide -- Part 1: Determination of total cyanide