These AllaFrance °API Hydrometers are manufactured according to the ASTM E100 specifications of the American Society for Testing and Material (ASTM).
The hydrometer scale is marked with the reference standard, the calibration temperature, the surface tension, the individual number of the instrument, the serial number and the AllaFrance logo.
A reference mark is engraved on the stem to show any shift of the scale.
Graduated in °API , Division ± 0.1°API , Accuracy ± 0.1°API and Temperature Calibration in 60/60°F.
Reading below meniscus.
Each item is supplied with a Certificate of Conformity (COC), and packed in individual telescopic square plastic box.
