A water-removeable Level 1 penetrant, ZL-19 is designed for use on rough or unmachined surfaces such as castings and forgings to find larger discontinuities in non-safety critical components. It is ideal for inspecting automotive and general industrial components such as engine cylinder blocks, power train components, rocker arms, pistons, steering knuckles, etc. ZL-19 washes off parts with ease, leaving less background for clearer indications – even on rough surfaces. The quick rinsing reduces water usage in the inspection process which helps users reduce their over-all cost per part by reducing penetrant loss through drag-out, speeding up the washing and inspection process, and cutting rinse water costs. ZL-19 can be used with ZP-4D dry powder developer, with ZP-5B water suspendible developer in an agitated tank or with ZP-9F non-aqueous developer. With a UV-A light source, indications will appear as a bright green-yellow fluorescence. ZL-19 is listed on the QPL SAE AMS 2644 Qualified Product List. KEY FEATURES Level 1 sensitivity Water washable Excellent rough surface washability Bright, high contrast indications Clean rinsing on cast parts Won’t clog spray nozzles in automated systems Good surface wetting High flash point Easy washability Less time to rinse Use less penetrant per part Applications Defect location: open to surface Ideal for: Castings Forgings Rough surface finish Unmachined parts Engine cylinder blocks Power train components Rocker arms Pistons Steering knuckles Automated penetrant lines Defect examples: Cracks Seams Cold shuts Delamination Porosity Hot tears Laps Compliance AECL AMS 2644 ASME ASTM E1417 ASTM E165 Boeing BAC 5423 PSD 6-46 or 8-4 Boeing PS-21202 MIL-STD-2132 MIL-STD-271 NAVSEA T9074-AS-GIB-010/271 QPL SAE AMS 2644
