The confecting of NSS, CASS, salt spray test
The neutral salt spray test (NSS) saline solution with sodium chloride (pure chemicals above) mixture 5 + / - 0.1% salt solution and distilled water, after atomization of liquid collection, besides
baffle block part of the back, may not be reused.
2. The solution acidity meter can be used or PH test paper measured the PH value, 35 ℃ when PH value should be within the range of 6.5 ~ 7.2, if the PH value is beyond the scope of this measure,
dilute hydrochloric acid or sodium hydroxide adjusting are available, and shall not be concentrated hydrochloric acid should be paid attention to in the salt solution or solid sodium hydroxide added
directly, in case the local concentration, which might affect the PH measurement.
3. Copper accelerated acetic acid salt spray testing (CASS), on the basis of saline solution by neutral salt solution in add 0.26 g per litre 5% solution of cupric chloride and acetic acid to adjust PH
value by the ice.