Description:
ASTM-Like S20F 134 to 148°F Saybolt Viscosity Glass Thermometer with Blue Spirit Fill. Thermco blue spirit filled (non-mercury) ASTM-Like Thermometers are made to specifications of the American Society for Testing and Material. Each thermometer is individually serialized and calibrated against standards traceable to NIST & DKD in a PJLA approved calibration laboratory. These thermometers are not ASTM approved but are calibrated to meet those specifications.