• Mi-Glow 778S - RTU - Case (6 x 1-Quart Spray Bottles)

Mi-Glow 778S - RTU - Case (6 x 1-Quart Spray Bottles)

  • Price: $202.00

Available Options

Quantity Discount Price
3 $191.90
Container Size Product Number
1-quart spray bottle FG-3571-1
Case of 6 x 1-quart spray bottles FG-3571


Circle Systems' Mi-Glow 778S - RTU is a ready to use fluorescent magnetic particle solution.

CircleSafe 778A (FG-3572) is a Ready-to-Use water bath packaged in a hand-held spray bottle. The water bath contains Mi-Glow 800 fluorescent yellow-green particles premixed with liquid Wetting Agent 771. It is designed for revealing very fine discontinuities in finished products using a black light.




  • Particle Color: Fluorescent yellow-green
  • Concentration: 1.3 g/ml
  • Particle Size: Not less than 98% passage through US Standard No. 325 (45 μm) sieve as defined in AMS 3044. The typical range of particle sizes is from 2 to 6 μm, with an average particle size of 3 μm.
  • Sensitivity: Mi-Glow 778S RTU shows a minimum of 8 lines on an AISI 01 Ketos tool steel ring (as defined in SAE AS5282), set on a 1-inch diameter copper bar, magnetized with 2500 A of direct current.
  • Particle Certification: Particles meet or exceed all relevant industry specifications, including but not limited to MIL-STD-1949, AMS 3044, MIL-STD-271, NAVSEA 250-1500-1, NTR-1E, ASTM E 1444. Certification is included with each shipment.
  • Temperature Limits: 32-120°F (0-49°C)
  • Shelf Life: Five (5) years, when sealed bottles are not subjected to excessive heat or cold. A Certificate of Shelf Life is available upon request.


Directions for Use

  • Preparation: Thoroughly shake the bottle, insert the spray nozzle and apply to the parts for inspection.
  • Concentration Test: If it becomes necessary to verify the concentration in the bottle, thoroughly shake the bottle and the method of test should be as follows:
    • Fill a 100 ml graduated centrifuge tube as specified in Guide E709, or equivalent, to the 100 ml mark with suspension directly from the bottle. Demagnetize the suspension, if considered necessary, and let it stand undisturbed for a minimum of 30 minutes or until completely settled.
    • Read the volume of the precipitate in the graduate. The recommended volume is between 0.15 to 0.3 ml. NOTE: Very fine particles may go into colloidal Revised 2/4/2021 Technical Bulletin 276, Mi-Glow® 778S-RTU Page 2 suspension, appearing as fluorescence in the upper area of the bulb. A magnet can be used to determine that these are actually very fine particles.
  • Corrosion Inhibition: For best results, the system should be run in the pH range of 8.5 - 9.5, as verified by testing with a pH meter or pH paper.



Container Size Product Number
1-quart spray bottle FG-3571-1
Case of 6 x 1-quart spray bottles FG-3571


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