• Mi-Glow 820S - RTU - Quart Spray Bottle

Mi-Glow 820S - RTU - Quart Spray Bottle

  • Brand: Circle Systems, Inc.
  • Product Code: FG-3612-1
  • Availability: Backorder - Estimated to ship 03/11/2024 (if ordered today!)
  • Note: This item is currently on backorder with an estimated ship date of 03/11/2024, you can place an order for this item and it will be shipped when it becomes available.
  • Price: $44.00

Available Options

Container Size Product Number
1-quart spray bottle FG-3612-1
Case of 6 x 1-quart spray bottles FG-3612


Circle Systems' Mi-Glow 820S - RTU is a ready to use nonfluorescent magnetic particle solution.

Mi-Glow 820S-RTU is a Ready-to-Use water bath packaged in a hand-held spray bottle. The water bath contains Mi-Glow 106 black particles and liquid Wetting Agent 771. It is designed to be used with visible light for revealing discontinuities on machined component parts.




  • Particle Color: Black
  • Concentration: 9.5 g/l
  • 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 0.5 to 4.0 μm, with an average particle size of 1.5 μm.
  • Sensitivity: Mi-Glow 820S RTU shows a minimum of 6 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 3042, MIL-STD-271, NAVSEA 250-1500-1, NTR-1E, ASTM E 3024. 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.
  • Lighting: A minimum of 100 foot candles (1000 lux) of visible light at the part surface per ASTM E 709 and ASTM E 1444 is recommended.
  • 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 60 minutes or until completely settled.
    • Read the volume of the precipitate in the graduate. The recommended volume is between 1.2 to 2.4 ml. 



Container Size Product Number
1-quart spray bottle FG-3612-1
Case of 6 x 1-quart spray bottles FG-3612


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