Fluke Metrology Wells

Ultra-cool dry-block calibrator with best-in-class stability

The Fluke Calibration 9190A Ultra-Cool Field Metrology Well is the most accurate and stable, cold temperature dry-block on the market. It’s ideal for applications that demand strict quality control and regulatory process compliance. Its wide temperature range includes the coldest and highest temperature ranges required for most pharmaceutical, biomedical and food processing applications, including on-location validation and calibration of

  • Resistance thermometers / resistance temperature detectors / RTDs
  • Thermocouples
  • Thermometers
  • Sensors used with process control equipment such as medical freezers, laboratory refrigerators, cold rooms, blood banks, sterilizers (autoclaves), and freeze dryers.


Fluke 9190A Metrology Well Benefits:



Wide temperature range

  • –95 °C to 140 °C


Excellent accuracy

  • Accuracy using built-in reference thermometer readout:  ± 0.05 °C full range


Display accuracy 

  • ± 0.2 °C full range


Best-in-class stability

  • ± 0.015 °C full range


Fast cooling time

  • 23 °C to –90 °C:  80 minutes
  • 23 °C to –95 °C:  90 minutes
  • 140 °C to 23 °C:  60 minutes


Portable and easy to use

  • Weighs only 16 kg (35 lbs)
  • Fits on bench or cart with room to spare
  • All controls and inputs are accessible via the front panel
  • Built-in front and back handles for easy two-handed carry
  • No fluids to spill or give off vapors


With the Fluke 9190A Metrology Well, you can be confident you are using the the most stable and accurate ultra-cool dry-block calibrator available — for a positive impact on your processing chain.


Masy BioServices is an Authorized Distributor of Fluke Calibration Products

Fluke Calibration is a leader in precision instrument calibration and metrology hardware and software for electrical, temperature, pressure, flow, and RF measurements. Calibration instruments and software from Fluke Calibration are found in calibration facilities around the world, including National Metrology Institutes, that demand the highest levels of performance and reliability for their calibration equipment.

As an authorized distributor of Fluke Calibration products, Masy BioServices can provide you with a full suite of temperature calibration equipment including metrology wells, dry wells, dry block calibrators, thermometer readouts, reference thermometers, platinum resistance thermometers (PRTs), temperature probes, reference thermistors, and more.

Contact us with your metrology hardware and software requirements, and let us help you find the optimal system for your needs.

Equipment for Rentals and Sales

Validation Datalogging Systems

Monitoring Systems

Temperature Standards

Temperature Reference Baths

  • Fluke 9190A

  • GE Kaye LTR-140

  • GE Kaye HTR-400

  • GE Kaye CTR-80

  • Hart 7380

Specialty Reference Baths

  • GE Kaye K140-4

  • Fluke 9190

  • Hart Micro-Bath 6102

  • Hart Micro-Bath 7103

  • Hart Portable Furnace 9150

  • Hart Handheld Drywell 9100/9001S

  • Hart Handheld Drywell 9102

Additional Equipment

Related Products & Services