If electrical calibrations are part of your work or you use external resistors in your SPRT calibrations, you know how important it is to provide a stable temperature environment for your resistors. Hart Scientific makes one that delivers superior stability while contributing less noise and heat to your lab than most common resistor baths.

At Hart, we use standard resistors every day, so we understand what’s needed in a resistor bath. And our new Model 7108 Peltier-Cooled Resistor Bath includes it all.

Using mineral oil, this bath provides stability better than ±0.004°C with uniformity less than ±0.008°C. That means your calibration uncertainty resulting from temperature issues is somewhere between nonexistent and negligible.

This is also the quietest resistor bath you’ve ever heard. The 7108 uses thermoelectric (Peltier) modules to provide heating and cooling over its range from 20°C to 30°C. Without a compressor, noise is dramatically reduced. Power requirements are also lower, so you save money running the bath and add less heat load to your lab.

With a 13.2-gallon (51-liter) tank, the 7108 holds plenty of resistors. A large 14" x 14" (356 x 356 mm) access opening allows you to easily move resistors in and out of the bath. A resistor rack comes with each unit that fits across the bottom of the tank. Made from hard-anodized perforated aluminum, this rack maintains the necessary electrical isolation between your resistors.

Hart baths have been used in primary temperature and electrical labs for years. Why shouldn’t they be? They’re the most stable baths in the world