Unfortunately, the RHA-33 has been discontinued, check out our other General Accessories for more options.


Applications: Precision 33% RH CALIBRATION STANDARD for the Humidity Instruments : HT-3003, HT-3004, HT-3005, HT-3006, HA-702, HA-703, HA-704.
Size: Round 70 mm dia. x 52 mm Round 2.8 inch dia. x 2.0 inch.
Weight: 120 g ( 0.3 LB ).
Content: RHA-33 Over saturated salt solution of MgCl.
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