43091. Can the salt solution be recycled after being collected from salt chamber? [India]

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43091

Can the salt solution be recycled after being collected from salt chamber? [India]

November 21, 2006

Can the salt solution be recycled after being collected from salt chamber?
Suppose we use 5% NaCl Solution for salt-spray chamber,PH value was adjusted according to ASTM B117, Now if we get the collected solution with having PH in the same range as it was earlier, then can we use the colleted solution again and again?

Daitari Kamila
Jindal Stainless Limited, Haryana - Delhi, India

November 22, 2006

Hi,
Per ASTM B-117 [link is to info about spec at TechStreet], paragraph 4.2 which states that "drops of solution which accumulate on the ceiling or cover of the chamber shall not be permitted to fall on the specimens being exposed."

4.3 states that "drops of solution shall not be returned to the solution reservoir for respraying."

I never heard of anyone recycling their collected salt fog.

Bill Duttlinger
Nalco Company - Naperville, IL