CircleSafe® 820A

Our Solution Results in:

  • Exceptional particle mobility
  • Clear and accurate inspections
  • Economical
  • No odor or fume inspection
Visible Magnetic Particle Inspection

CircleSafe® 820A

CircleSafe® 820A is a nonfluorescent (visible) wet method magnetic particle inspection aerosol spray made up of extremely sensitive Mi-Glow® 106 black particles, premixed with our advanced liquid water conditioning agent, Wetting Agent 771, formulated in water media. It is designed to be used with visible light for a nonfluorescent wet method magnetic particle inspection of discontinuities found in the NDT of finished surfaces, structural fabrications, and welds. Higher particle concentration provides a clear and well-defined indication buildup for easy detection.  The water conditioning agent #771 offers best in class wet magnetic particle coverage on the inspection surface and has the necessary corrosion inhibitors and conditioning agents for a successful water based magnetic particle inspection. Use with Mi Glow® White Contrast Paint (WCP) for an enhanced and more sensitive wet method magnetic particle testing result. Along with the other water based magnetic particle inspection aerosols in the CircleSafe® product line, the CircleSafe® 820a is packaged with a carbon dioxide propellant for an odor-free, fume-free, non-combustible, and SAFE magnetic particle inspection.

7HF – A highly-sensitive oil-based magnetic particle aerosol for nonfluorescent (visible) wet method magnetic particle testing to locate fine and medium discontinuities on finished parts.

7HF provides clear, strong indications due to the heavy buildup of the highly magnetic particles. The convenient aerosol packaging is ideal for field testing, spot inspections and places where bulk processing is impractical, and the wide spray pattern makes it easy to cover large areas for faster processing during remote inspections of tubing, piping and large structures. 

This aerosol is packaged in a carbon dioxide propellant for odor-free, fume-free, non-combustible inspection. CircleSafe® 820A can be used with Mi-Glow® WCP.

Mi Glow


  • Apparent indications provide reliable visible magnetic particle inspection results
  • Utilizes water – based wetting agents to ensure a safe fume free inspection
  • Responsive high - sensitive magnetic characteristics
  • No odor - no fume propellant reduces health concerns in confined areas

Ordering and Specifications

Local Map
Domestic Packaging

Item # / Package Size
#3600 – 12 – 16 ounce cans/case

International Packaging

Item # / Package Size


Technical Specifications

Physical Characteristics
Black solution with a slight detergent odor, contained in an aerosol package.

Particle Certification
Particles meet all relevant industry specifications, including but not limited to ASTM E 1444, ASTM E 3024, MIL-STD-271, AMS 3042 and NAVSEA 250-1500-1.  Certification is included with each shipment.

Particle Color: Black
Average Particle Size: 1.5 µm
AMS Standard: 3042
SAE Sensitivity*: 6
Temperature Range: 120°F Maximum

*Representative of the number of lines shown on an AISI 01 Ketos tool steel ring as defined in SAE AS5282.



Related Product Information