Dry Powder Developer
ZP-4B is a free flowing, white, fluffy powder used as a high sensitivity dry powder developer for penetrant inspection. It is supplied ready to use and forms a thin film on parts which enables it to enhance indications of ultra-fine discontinuities.
ZP-4B is listed on the QPL SAE AMS 2644 Qualified Product List and is approved for use by Pratt & Whitney.
Container Size & Part Number
10 lb / 4.53 kg pail 01-3328-69
20 lb / 9.07 kg pail 01-3328-75
Defect location: open to surface
- Turbine components
- Critical components
NDT Method: Penetrant Testing
Type: Type 1 and Type 2
Form: Form a