Relative Humidity (RH) calibration bottles containing saturated salt solutions for calibrating humidity sensors at 33% and 75% RH values with an accuracy of 1% at +25°C. The bottles accept humidity probes of 15mm diameter.

Simply unscrew the cap of the required bottle and insert the humidity probe. The saturated salt solution generates a fixed relative humidity in the air under stable conditions.

Note: featured hygrometer and sensors are supplied separately