Product Data Sheet – ZYGLO ZL-15B, ZL-19, ZL-60C, ZL-60D, ZL-67B, ZL-56

Water-washable Fluorescent Penetrants

ZYGLO® ZL-15B, ZL-19, ZL-60C, ZL-60D, ZL-67B and ZL-56 are fluorescent water-washable penetrants with excellent controlled washability over a wide temperature range. With a UV-A light source, indications will appear as a bright green-yellow fluorescence.

Our water-washable fluorescent penetrants are used in a wide range of sensitivity applications, from ultra-low to ultra-high. They exhibit outstanding penetrating characteristics, giving you maximum reliability in locating surface-open flaws and defects.

Chemical product icon - fluorescent penetrant

Features

  • Bright indications
  • Excellent washability
  • Wide range of sensitivity applications

Applications

Defect location: open to surface

Ideal for:

  • Castings
  • Forgings
  • Rough surface finish
  • Seams
  • Laps
  • Cold shuts
  • Laminations
  • Cracks
  • Delamination
  • Porosity

Composition

A blend of non-ionic surfactants, petroleum distillate and fluorescent dyes.

User Recommendations

NDT Method Penetrant Testing, Fluorescent
Storage temperature 10°C to 30°C
Usage temperature 5°C to 55°C (bulk); -5°C to 50°C (aerosol)
Coverage 20 – 30m² per litre; 10 – 15m² per aerosol
Cleaner/remover SKC-S
Developers SKD-S2, ZP-4B, ZP-5B, ZP-9F, ZP-14A
UV lamps EV6000, ST700

Product Properties

Form and colour Green-yellow liquid
AMS 2644 class Type 1, Method A
Flash point > 93°C
Sulphur content < 300 ppm
Chloride content
< 300 ppm
Fluoride content
< 50 ppm
Sodium content
< 100 ppm
Corrosion
Meets AMS 2644

Product Properties (continued)

Property ZL-15B ZL-19 ZL-60C ZL-60D ZL-67B ZL-56
Density 0.86 g/cm³ 0.86 g/cm³ 0.88 g/cm³ 0.92 g/cm³ 0.95 g/cm³ 1.01 g/cm³
Viscosity at 38°C 5.2 mm²/s 5.6 mm²/s 7.0 mm²/s 10.6 mm²/s 20.0 mm²/s 19.0 mm²/s
AMS 2644 sensitivity Level 0.5 (Ultra-low) Level 1 (Low) Level 2 (Medium) Level 2 (Medium) Level 3 (High) Level 4 (Ultra-high)
EN-ISO 3452 sensitivity Level 1 (Low) Level 2 (Low) Level 3 (High)

Like all Magnaflux materials, our water-washable fluorescent penetrants are closely controlled to ensure batch-to-batch consistency, optimum process control and inspection reliability.

Specification Compliance

Specification ZL-15B ZL-19 ZL-60C ZL-60D ZL-67B ZL-56
AMS2644 Yes Yes Yes Yes Yes Yes
ASME B & PV Code, Sec V Yes Yes Yes Yes Yes Yes
ASTM E1135 Yes
ASTM E165/E165M-18 Yes Yes Yes Yes Yes Yes
ASTM E1417/E1417M Yes Yes Yes Yes Yes Yes
EN ISO 3452-2 Yes* Yes Yes
MIL-STD-2132D Yes Yes Yes Yes Yes Yes
MIL-STD-271F Yes Yes Yes Yes Yes Yes
Pratt & Whitney PMC 4350-2 PMC 4351-8 PMC 4351-2 PMC 4360-10
Rolls Royce RRP 58003 (CSS 232) Yes Yes Yes Yes
SAFRAN Pr 5000/In 5000 Yes Yes

* water absorbency 6.10, requirement of >5% not met

Instructions for Use

Pre-clean the test part and allow to dry. The surface must be free from oil, grease and any other contaminant.

Apply the penetrant by immersion dip, brush, flow on, conventional or electrostatic spray. The test area must be completely covered with penetrant.

Allow contact time of 2 – 5 minutes minimum. 10 minutes should be adequate for most situations, although specific process specifications may require longer – check the controlling process specification (where applicable).

Remove excess penetrant by thoroughly spraying the test part with clean water at 10°C – 40°C. This should be carried out under a UV(A) source so you can monitor the penetrant removal.

Dry the test part by placing in a controlled recirculating warm air dryer at a temperature of 50°C – 70°C.

Apply a developer to maximise the sensitivity of the penetrant and to provide a white contrasting background. There are three types of suitable developer:

  • Dry powder: Free-flowing, lightweight powders which are applied to the dry component by powder storm, dusting, electrostatic spray or puffer.
  • Solvent-based: Quick-drying materials which are applied to the dry component by spraying.
  • Aqueous or water-based: Apply before drying by dipping or spraying. Note: to maximise penetrant sensitivity, do NOT leave parts in aqueous developers for any length of time.

Inspect your test part using a suitable UV source. Any defect indications will fluoresce a bright green-yellow when exposed UV(A) light at a peak wavelength of 365 nm.

If required, you can clean your test part after inspection. Developer residues can be removed either by wiping with a cloth or by a water and detergent wash. Penetrant residues can be removed by vapour degreasing or solvent soak.

Health & Safety

Review all relevant health and safety information before using this product. For complete health and safety information, refer to the relevant Safety Data Sheets.

Download this Product Data Sheet as a PDF

Packaging and Part numbers

ZL-15B

Part number 056C061

Packaging icon: 25 litre metal barrel

Part number 056C062

Packaging icon: 200 litre barrel

ZL-19

Part number 056C185

Packaging icon: 25 litre metal barrel

Part number 056C186

Packaging icon: 200 litre barrel

ZL-60C

Part number 008A008
x 10

Packaging icon: 400 ml aerosol can

Part number 056C205

Packaging icon: 25 litre metal barrel

Part number 056C206

Packaging icon: 200 litre barrel

ZL-60D

Part number 056C010

Packaging icon: 25 litre metal barrel

Part number 056C011

Packaging icon: 200 litre barrel

ZL-67B

Part number 056C034

Packaging icon: 25 litre metal barrel

Part number 056C035

Packaging icon: 200 litre barrel

ZL-56

Part number 056C201

Packaging icon: 25 litre metal barrel

Part number 056C202

Packaging icon: 200 litre barrel