Best Seller | EXTECH RH300-CAL Humidity Calibrtn Kit,33 per RH & 75 RH Humidity Calibration Kit, Relative Humidity Accuracy +/-3 Percent, Number of Pieces 2, Compatible Manufacturer Model Number 445815, Product Type Humidity Meter Calibration Kit, Sample Humidity 33 Percent, 75 Percent, Includes 33 Percent and 75 Percent... ... more EXTECH RH300-CAL Humidity Calibrtn Kit,33 per RH & 75 RH Humidity Calibration Kit, Relative Humidity Accuracy +/-3 Percent, Number of Pieces 2, Compatible Manufacturer Model Number 445815, Product Type Humidity Meter Calibration Kit, Sample Humidity 33 Percent, 75 Percent, Includes 33 Percent and 75 Percent... | | $66.29 go to store |