Our customer is a manufacturer of aerospace components. They needed to know propan-2-ol content in our non-aqueous developers, in order for satisfy a NADCAP audit.
This customer carries out inspection of components using our ZYGLO® ZL-60D level 2 water-washable fluorescent penetrant. They then use ZYGLO® ZP-9F as their approved non-aqueous wet developer.
NADCAP audit criteria states that “where non-aqueous wet developers (NAWDS) are in use, can the supplier provide evidence that the constituent breakdown of the carrier fluid is equal to or less than 50% propan-2-ol”.