Extech RH300-CAL Humidity Calibration Kit
33% and 75% Humidity Calibration Reference
- Bottles designed with small opening for snugged fit of the sensor
- Includes 33%RH and 75%RH calibration bottles
The RH300-CAL is a kit which contains 33% and 75% humidity calibration bottles. Used for verifying calibration of the 445815 humidity meter. Bottles have small opening designed to snuggly fit the remote sensor probe.