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, and the rinse water is easily treatable for simpler disposal.
This economical fluorescent penetrant 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-4B 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.
Increase indication detection
Speed up your inspection process
Performance value
Maximise operator comfort and safety
NDT TypeFluorescent Penetrant Testing
Penetrant TypeType 1
Fluorescent Penetrant SensitivityLevel 1 - Low Sensitivity
Penetrant MethodsMethod A, Method C
Removal TypeWater Washable
Required EquipmentUV light source
Ideal ApplicationCastings, Engine cylinder blocks, Forgings, Pistons, Power train components, Rocker arms, Rough surface finish, Steering knuckles, Unmachined parts
Defect ExamplesCold shuts, Cracks, Delamination, Laps, Porosity, Seams
StandardsAMS 2644, ASME BPVC, ASTM E1417/E1417M, ASTM E165/E165M-18, MIL-STD-2132

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