Magnaflux MV-740 Wet Visible Magnetic Particles

Magnaflux MV-740 Wet Visible Magnetic Particles

Highly Sensitive, Ready to Use and Eco Friendly


A highly-sensitive water-based magnetic particle fluid for non-fluorescent (visible) wet method magnetic particle testing to locate fine and medium discontinuities on finished parts. MV-740 provides clear, strong indications due to the heavy buildup of the highly magnetic particles. The product is ready-to-use, so no dilution is required.

MV-740 is often used with WCP-2 white contrast paint to improve contrast and inspection sensitivity.


  • Ready-to-use solution
  • Clear indications under visible light
  • Heavy particle buildup
  • Great particle mobility
  • Protects parts and equipment against corrosion
  • Optimized surface wetting
  • Works in visible light
  • Water-based formula
  • Low odor


  • Eco Friendly Profile
    • Environmental-friendly water-based formula
    • Packaging made from post-consumer recycled plastic and can be recycled after use
    • Non-aerosol format reduces disposal hassle and cost, and does not contribute hydrocarbon chemicals to the atmosphere
  • Maximize Application Versatility & Indication Detection
    • Heavy build-up of highly magnetic particles around all leakage fields make for heavy-contrast indications, especially when used with WCP-2 white contrast paint
    • Inspect a wide range of components without fear of corrosion or specification non-conformance
    • Inspect in all conditions without the need for darkness or UV lights, including at temperatures below freezing
    • Use with various applicators, choose the sprayer that works best for your application - no dilution required

Technical Specifications

MV-740 Specifications

Appearance Water-based solution with fine particles
Color in Visible Light Black
Odor Odorless
Mean Particle Size < 2 microns
SAE Sensitivity > 6
Flash Point > 212 °F (100 °C)
Use Recommendations
NDT Method Magnetic Particle Testing, Nonfluorescent / Visible, Wet Method
Suspension Vehicle Water
Required Equipment Magnetizing device
Usage Temperature 25 to 120 °F  (-4 to 48 °C)
Freezing Point 25 °F (-4 °C)
Storage Temperature 50 to 86 °F (10 to 30 °C)
Settling Volume 1.20 – 2.40 mL
Coverage 833 ft2 (77 m2)
Specification Compliance
ASTM E1444
Boeing PS-21201
ISO 9934
NAVSEA 250-1500-1
NAVSEA T9074-AS-GIB-010/271
Description Part # Saved Price Select Option Add to
Magnaflux MV-740 Wet Visible Magnetic Particles, 1 gal / 3.78 L (case of 4) MT-MX-01-9140-35 $477.00