An ultra-high sensitivity penetrant (Level 4), ZL-56 fluorescent water-washable penetrant is safe for use on alloys in engineering and aerospace use, including aluminum, steel, nickel and titanium.

ZL-56 is designed for non-porous and highly machined components. Developers recommended are ZP-4B powder, ZP-9F non-aqueous, SKD-S2 non-aqueous and ZP-5B water suspendible.

• Bright, high-contrast indications
• Ideal for critical part inspection
• Ultra-high sensitivity for aerospace inspections

Ordering Information 

25 litres: 056C201

200 litres: 056C202

Product Properties 

NDT Type: Fluorescent Penetrant Testing

Penetrant Type: Type 1

Fluorescent Penetrant Sensitivity: Level 4 - Ultra-High Sensitivity

Penetrant Methods: Method A, Method C

Removal Type: Water Washable

Required Equipment: UV light source

Applications 

Ideal Application: Aerospace alloys, Aluminium, Critical components, High-stress parts, Nickel, Non-porous surfaces, Smooth, machined surface finish, Steel, Titanium

Defect Examples: Finished surface cracks, Scratches

Compliance 

Standards: AMS 2644, ASME BPVC, ASTM E1417/E1417M, ASTM E165/E165M-18, MIL-STD-2132, Rolls Royce RRP 58003 (CSS 232)