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...