Enviro-Safe liquid is EnviroKleen certified by ChemTel, an independent laboratory. Thermometers are comparable in accuracy to mercury filled thermometers, but are 100 percent environmentally safe, tested and calibrated in a triple accredited/registered ISO/IEC 17025:2005, A2LA accredited laboratory against equipment whose calibration is traceable to NIST and/or DKD/PTB (Europe). They are accurate to the requirements of ANSI/SAMA Z236.1-1983, ASTM, NIST, DKD and/or equivalent standards. Statement of accuracy, in multiple languages (English, French, German, Italian, Portuguese and Spanish) indicating accuracy traceable to NIST and DKD/PTB. Made in the USA. Individually packaged in Safety-Pak packaging to prevent breakage. Made in the USA. 2 degree C division. 0 - 300 degrees F Temperature range.

305mm Length. +/-1 degrees C accuracy or better. Individually serialized for record keeping. Calibrated for total immersion depth. Filled with environmentally safe non-toxic, non-hazardous, biodegradable green Enviro-Safe liquid against white back glass.