Humidity Calibration Kit Extech RH350-CAL

The Extech RH350-CAL Humidity Solution Kit is a calibration kit for Extech humidity indicators and is designed for use with Extech RH350 Hygro-thermometer psychrometer. The RH350-CAL includes two bottles-- one at 33% RH and the other at 75%. These bottles are designed to fit snugly around the sensor for accurate calibrations