Red mineral spirit alcohol filled teflon-coated thermometer for the incubator. Division 0.5°C, length 135mm, total immersion, bottle contains 60ml ethylene glycol. Contains no hazardous mercury. Because mercury is considered an extremely hazardous material, special disposal method is now required by law, the disposal of mercury is expensive. In addition, any lab that has mercury on the premises must also contain a “Mercury Spill Kit”. Extremely accurate, traceable to NIST and supplied with a certified document. The teflon coating protects from breakage and contains all the glass and liquid if breakage occurs. Double magnets allow the thermometer to be attached to the side wall or the door of the chamber.