Extech RH300-CAL Humidity Calibration Kit

Extech RH300-CAL Humidity Calibration Kit 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. Extech RH300-CAL Humidity Calibration Kit works with the Extech Big Digit Hygro-Thermometer Product Details:

• 33% RH Calibration Bottles; 75% RH Calibration Bottles
• Relative Humidity Accuracy: ±3%
• Sample Humidity: 33%; 75%

Care and Use (Click here for more information) The bottles should be kept closed and tightly sealed when not in use. If the contents of the bottles are left to dry and harden, the bottles must be immediately replaced.