Level ½ Water Washable Fluorescent Penetrant

ZL-15B water washable penetrant is a low-sensitivity penetrant that features excellent washability. It is used to find open surface flaws such as cracks and porosity in seams, laps, cold shuts, and laminations on castings, forgings, extrusions, and parts with rough surfaces.

ZL-15B can be developed 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, like the EV6000, indications will appear as a bright green-yellow fluorescence.

  • Bright indications
  • Excellent washability

This product is currently out of stock and unavailable.

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  • NDT Type: Fluorescent Penetrant Testing
  • Penetrant Type: Type 1
  • Fluorescent Penetrant Sensitivity: Level 1/2 – Very Low Sensitivity
  • Penetrant Methods: Method A, Method C
  • Removal Type: Water Washable
  • Required Equipment: UV light source
  • Ideal Application: Castings, Cold shuts, Forgings, Laminations, Laps, Rough surface finish, Seams
  • Defect Examples: Cold shuts, Cracks, Delamination, Porosity, Seams

Standards: AMS 2644, ASME BPVC, ASTM D129, ASTM E1417/E1417M, ASTM E165/E165M-18, MIL-STD-2132

Additional information


25 Litres, 200 Litres