ZP-4D is a noncombustible dry powder developer for form A penetrant testing that is ideal for highly sensitive fluorescent penetrant processes. ZP-4D is applied to oven dried parts following the use of penetrants and forms a thin film on parts that enhances the visibility of ultra-fine discontinuities.
- Even, thin developer coverage
- Enhances visibility of ultra-fine discontinuities
- Non-combustible powder
- QPL SAE AMS 2644 Qualified Product List
- Approved for use by Pratt & Whitney