These AllaFrance Thermometers are manufactured according to the The latest specifications of ASTM Standard E2251 -14
(Standard Specifications for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precison Liquids).
The colour of the glass of these thermometers is standardized in yellow, giving a much better reading than the white back with non-toxic Blue Special liquid.
Clear, sharp graduation lines are printed and permanently fused to the glass surface, making them resistant to all chemicals except hydrofluoric acid and, to a lesser extent, hot caustic soda, because both corrode glass.
Every ASTM thermometer has an individual number printed on the back. This number is stocked in AllaFrance data base and fully traceable to our official masters. Our official masters are regularly controlled and are traceable in over 100 countries worldwide.
The thermometer is fully marked on the back with the ASTM number, the purpose and ASTM method.
If an ASTM has an equivalent I.P., both standards are printed on the back of the instrument.
Delivered with a special hook that can be clipped on the glass, specially designed and patented by ALLA FRANCE (not supplied for thermometers with diameter greater than 7 mm).
Each item is supplied with a Certificate of Conformity (COC), and packed in individual telescopic square case.
ASTM E2251 Thermometer °F Series – Blue Liquid 
ASTM E1 Thermometer °F Series – Blue Liquid
