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Psychrometer, 10 to 120F, 10 to 100% RH
Item #: CLP/SK-03312-21
Manufacturer: Cole Parmer Instrument Company
Supplier #: SK-03312-21
More About this Item:Psychrometers measure relative humidity without agitation. To use, turn on the fan and let it run for 1 1/2 to 2 minutes. Then, subtract wet bulb reading from dry bulb reading and use the included slide rule and tables to calculate the RH. Fan is powered by three size D batteries (order separately).