Product details:

Bel-Art Products, 60210-1300, H-B Frio-Temp Electronic Thermometer, 4C Refrigerator, 30ml w Beads Features: Place Entire Digital Unit Directly in Refrigerators, Incubators and Ambient Rooms Digital verification thermometers verify sample temperatures inside refrigerators and incubators without the use of a cable. Accurate temperature reading without sample contamination is achieved by using the liquid or glass bead filled bottle (included), which mimics the sample All models include accredited calibration documentation that meets the requirements of ISO 17025 Tested and calibrated in H-B's exclusive triple accredited/registered ISO/IEC 17025:2005, A2LA accredited laboratory (Cert #2448.01), against equipment whose calibration is traceable to NIST Includes multi-language instructions (English, French, German, Italian, Portuguese, and Spanish) Individually serialized, CE marked Note: Not for use in ovens or freezers.