Water Washable Visible Dye Penetrant

RP20 is a water-washable visible penetrant that is also post-emulsifiable for greater resolution of flaw indications. RP20 features outstanding penetrating characteristics for Type 2 penetrant testing in visible white light. This bright red penetrant is designed to wash off parts with ease, leaving less background for clearer indications, even on rough surfaces. The quick rinsing reduces water usage in the inspection process, and the rinse water is easily treatable for simpler disposal, for a reliable NDT process with less cost per part. RP20 offers maximum reliability in locating surface-open flaws and discontinuities, and can be used on non-porous ceramics and similar materials.

  • Outstanding penetrating characteristics
  • Vivid high-contrast colour
  • Superior flaw resolution
  • Excellent reliability
  • Wide range of applications
  • Excellent controlled washability over a wide temperature range and variable dwell times.

Dependable and convenient to use

  • Easy to carry and use in the field with the convenient aerosol cans which are carefully designed for consistent, even coverage and maximum test area coverage.
  • Use in all conditions without the need for darkness or UV lights
  • Quickly and completely covers the entire test surface due to high surface wetting

Maximum indication detection
Produces strong, vibrant indications thanks to the bright, vibrant red colour, especially when used with SKD-S2 solvent-based developer.

Maximise operator comfort and safety
Promotes better inspection quality by providing the operator with a more comfortable work environment

Ordering Information

Aerosol (case of 10)008A178

5 litres (case of 4)060C076

200 litres060C080

Product Properties

NDT TypeVisible Penetrant Testing

Penetrant TypeType 2

Penetrant MethodsMethod B, Method C

Removal TypeWater Washable


Ideal ApplicationCastings, Construction, Forgings, Leak detection, Metal work, Power plants, Pressure vessels, Tubular goods, Welds

Defect ExamplesCracks, Leaks


StandardsASME BPVC, ASTM E165/E165M-18

Related Products

  • SKL-WP2


    SKL-WP2 water washable visible penetrant for Type 2, Method A and Method C dye penetrant testing

  • SKD-S2


    SKD-S2 solvent-based developer for Form d or Form e penetrant testing Type 1 and Type 2

  • D30A


    D30A solvent-based developer for Form d or Form e penetrant testing Type 1 and Type 2

  • D30plus


    D30plus solvent-based developer for Form d or Form e penetrant testing Type 1 and Type 2

  • ZR-10C


    ZR-10C hydrophilic emulsifier and remover for Method D liquid penetrant testing

  • SKC-S


    SKC-S cleaner and remover for pre-cleaning before testing and for removing excess surface penetrant.

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