Advanced Temperature and Humidity Calibration now available using the newest technology on the market today-the Rotronic Hydrogen 2. We can now calibrate thermohygrometers/transmitters over a range of 5 to 98% at 0 to 60°C. This now means no more calibration of RH at a fixed point i.e. 25°C (excellent news for measuring multiple temp/RH ranges i.e. ICH conditions).