Glass alcoholometers and alcohol hydrometers not incorporating a thermometer

Document Number: NL ISO 4801 : 2016
Sector: Metrology and Measurement. Physical Phenomena
TC: NL TC 48
ICS:
This International Standard sets forth the requirements for three different types of glass instrument, not incorporating a thermometer, suitable for the accurate determination of the ethanol content of simple mixtures of ethanol and water, namely - tYPe 1 : alcoholometers graduated in percentage of ethanol by volume at 20 ‘C; - type 2 : alcoholometers graduated in percentage of ethanol by mass; - type 3 : alcohol hydrometers graduated in units of density (kilograms per cubic metre) at 20 “C. Two classes of accuracy are specified for types 1 and 2 and one class for type 3. Alcoholometers and alcohol hydrometers with an incorporated thermometer are dealt with in ISO 4805’ ).