These lightweight, portable dry block temperature calibrators are ideal for use in the field. They can be used with a wide range of inserts (not included) with different dimension wells to match numerous probe sizes. Safety features include an automatic cooling fan and overtemperature cutout which turns power off to the heaters if a fault develops or the unit exceeds maximum operating temperature. Temperature can be displayed in Celsius or Fahrenheit.

Please Note: Effective June 2022, the Techne Portable/Field Dry Block Calibrator Model number FDB425FS has now been rebranded Cole-Parmer under Model number HCB-200-425FS. All the same great features and specifications, just with a new and improved look.