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Hygromer ^® CS 30: Chemical Resistance 

The CS 30 sensor was subjected to the conditions listed in the table below. For reference purposes, each type of test is associated with a number between 1 and 16 (see diagram below).
1	120 h	in tap water	9	1 h	in acetone
2	1 h	in motor oil 10W-40 at 80°C	10	72 h	in water at 93°C
3	1 h	in 2-butanone	11	1 h	in xylene
4	1 h	in ethanol	12	1 h	in pyrrolidone
5	1 h	in ethylene glycol	13	1 h	in butyl acetate
6	1 h	in ethyl acetate	14	1 h	in hydrochloric acid 5%
7	1 h	in isopropanol	15	260 h	in 1000 ppm ammonia
8	1 h	in dipropyl ether	16	260 h	in 1000 ppm chlorine
Prior to each test, the sensor was measured in a humidity generator both at 10 %RH and 80 %RH. After each test, the sensor was cleaned for 3 minutes with distilled water in an ultrasonic bath and then dried at 140°C for 25 minutes. Sensor response was measured again in the humidity generator, both at 10 %RH and 80 %RH. Deviation from the original sensor response is reported in the diagram below: