Product Data Sheet – ZYGLO ZR-10C

Hydrophilic Emulsifier

ZYGLO® ZR-10C is a hydrophilic emulsifier used (diluted in water) as the remover/emulsifier in post-removable penetrant systems. It is designed to reduce fluorescent background from penetrants on rough surfaces, as well as reducing bleed-out of penetrant from hollow parts.

ZR-10C yields reliable and reproducible test results from post-emulsifier penetrants.

Chemical product icon - cleaner/remover


  • Reduces bleed-out on hollow parts
  • Reliable results
  • Usable in a wide range of concentrations
  • Excellent control over removability
  • Biodegradable

Specification Compliance

  • AMS2644
  • ASME B & PV Code, Sec V
  • ASTM E165/E165M-18
  • ASTM E1417/E1417M
  • EN ISO 3452-2
  • MIL-STD-2132D
  • MIL-STD-271F
  • Pratt & Whitney PMC 4355-11
  • Rolls Royce RRP 58003 (CSS 232)
  • SAFRAN Pr 5000/In 5000


Defect location: open to surface

Ideal for:

  • Castings
  • Turbine components
  • Critical components

Defect examples:

  • Cracks
  • Seams
  • Porosity


A blend of emulsifying agents.

Product Properties

Form and colour Pink/red liquid
Flash point > 100°C
Density 1.04 g/cm³
Viscosity 40.7 mm²/s at 38°C
Sulphur content < 500 ppm
Chloride content < 500 ppm
Fluoride content < 50 ppm
Sodium content < 500 ppm

In cold storage conditions, ZR-10C may appear cloudy. This is due to the type of surfactants used and is normal for this type of product.

Like all Magnaflux materials, ZR-10C is closely controlled to ensure batch-to-batch consistency, optimum process control and inspection reliability.

User Recommendations

NDT Method
Penetrant Testing
Storage temperature 15°C to 30°C
Usage temperature 15°C to 55°C

Instructions for Use

ZR-10C needs to be diluted with water before use, normally at a 5% – 20% concentration.

Immersion dip method:

  • Pre-clean the test part.
  • Apply penetrant and allow contact time.
  • Spray with clean water for 15-30 seconds.
  • Immerse part in the emulsifier bath for required time (normally 30 – 120 seconds).
  • Drain the part, then rinse with water
  • Allow to dry
  • Apply developer
  • Inspect part
  • Post-clean with a clean water spray to remove any penetrant/emulsifier residues.

When using ZR-10C, you will need to regularly agitate the bath during use, and check the concentration to ensure that the established working strength is maintained. This can be achieved by the use of a suitable refractometer and a concentration chart. To create a ZR-10C concentration chart:

  • Select three to five accurately known samples (e.g. 5-10-15-20-25% ZR-10C) that have been carefully measured and mixed.
  • Take readings of the known samples using the handheld refractometer.
  • Plot a chart with the refractometer readings on the vertical y-axis and the known % ZR-10C values on the horizontal x-axis.

The water content of the bath can also be determined using the procedure described in ASTM D-95.

Spray method:

ZR-10C can also be diluted and applied as a spray. For spraying, the usual concentration range is 0.1% to 0.5%; however, you can use a maximum concentration of 5% depending on the application.

Packaging and Part Numbers

Part number 065C002

Packaging icon: 25 litre plastic bottle

Part number 065C003

Packaging icon: 200 litre barrel

Health & Safety

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

Download this Product Data Sheet as a PDF