ZL-19

Level 1 Water Washable Fluorescent Penetrant

ZL‑19 is a Level 1, water-removable fluorescent penetrant engineered for non-destructive testing on rough or unmachined surfaces such as castings and forgings. It provides bright, clear indications under UV-A light and rinses off easily, reducing inspection time, water usage, and background fluorescence.

Features

High visibility and contrast: Fluoresces bright green-yellow under UV-A light for clear defect detection
Fast rinsing: Water-removable formulation speeds washing and minimizes water consumption
Spray-friendly: Designed not to clog nozzles in automated systems, reducing maintenance
Economical: Lower penetrant drag-out and streamlined process reduce cost per part

Applications

Inspections of cast automotive parts (e.g., engine blocks, pistons, rocker arms).
Detecting discontinuities like hot tears, laps, cold shuts on rough surfaces.
Industrial component checks (steering knuckles, powertrain elements, etc.).
Use with developers like ZP‑4B (dry powder), ZP‑5B (aqueous), or ZP‑9F (non-aqueous) for flexible inspection protocols.

Technical Data

Specification	Details
Type	Water‑removable Level 1 fluorescent liquid penetrant
Surface suitability	Rough, unmachined (castings, forgings, etc.)
Fluorescence color	Bright green-yellow under UV-A light
Developer compatibility	ZP‑4B dry powder, ZP‑5B water-suspendible, ZP‑9F non-aqueous
Washability	Excellent; reduces background fluorescence and rinsing time
Automation ready	Spray-friendly; does not clog automated nozzles
Economy	Lower drag-out = cost-efficient use