Magnaflux Zyglo ZP-4D Dry Powder Developer Magnaflux| 31465 Magnaflux Zyglo ZP-4D Dry Powder Developer Print Magnaflux| 31465 Magnaflux Zyglo ZP-4D Dry Powder Developer This dry powder developer from Magnaflux is a free-flowing white high-purity powder used as a dry developer for fluorescent penetrants and Zyglo penetrants. It forms a thin film on parts, which enables it to enhance indications of ultra-fine discontinuities. This product is an improvement on its predecessor, ZP-4B, to be non-combustible. The ZP-4D is listed on the QPL SAE AMS 264 qualified product list and is approved by Pratt & Whitney. Options: MGZP4B-6: ZP-4D, 10lb (4.53kg) pail. MGZP4B-5: ZP-4D, 20lb (9.07kg) pail. Request for information