Letter 20093

Hexavalent Chromium Level in Passivation after Bleaching  

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Dear All,

Just looking for confirmation, if I have a zinc alloy casting which is colour passivated yellow, which is then bleach sealed is the level of hexavalent chromium still the same after the bleaching process. I am trying to estimate the amount of hexavalent chromium on our parts.

Regards,

Chettan Karsan
- Newmarket, England

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