Formula 12 - Bacterial supplement for anaerobic digesters

Anaerobic digestion reduces organic matter in the sewage treatment process through natural decomposition. A wide variety of materials are processed in anaerobic digesters. This process produces methane gas which can be recovered and used as a source of energy.

Formula 12 is a special blend of high-performance microorganisms for the biological treatment of fats, oils, and grease in anaerobic digesters. Its surface tension depressants and penetrants loosen and liquefy heavy grease deposits, helping in their biodegradation. This completely biodegradable product is safe for people and the environment.

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Formula 12 Features


  • Industrial strength dry bacteria formulation

  • Specially formulated range of high-performance microorganisms for the biological treatment of organic materials

  • Biodegradable

  • Packaged in convenient, ready-to-use 1/2-lb water-soluble bags

  • Lives and reproduces in an environment containing no “free” or dissolved oxygen

  • Environmentally friendly

  • Available in 25-lb pail (Product# 145639)

Formula 12 Benefits


  • Reduces heavy grease deposits

  • Improves biodegradation

  • Reduces grease caps in anaerobic digesters

  • Can increase methane production and faster digestion

  • Reinforces the bacteria that are already in the wastewater

  • Improves stability of microbial populations

  • Maximizes performance of your biological wastewater treatment system

Using Formula 12


Dosing Schedule:
Flow Rate Initial Dosage Maintenance
Up to 1,000 GPD ½ lb. per day for 3 days ½ lb. per week
Up to 5,000 GPD ½ lb. per day for 3 days 1 lb. per week
Up to 20,000 GPD 5 lbs.* 1 ½ lb. per week
Up to 50,000 GPD 8 lbs.* 2 lb. per week
Up to 250,000 GPD 15 lbs.* ¼lb. per day
Up to 500,00 GPD 25 lbs.* ½lb. per day
Up to 1 MGD 50 lbs.* 1 lb. per day
Up to 5 MGD 50 lbs. per MGD* 1 lb. per MGD per day
Up to 12 MGD 50 lbs. per MGD* ¾ lb. per MGD per day
Up to 100 MGDD 30 lbs. per MGD* ½ lb. per MGD per day
* Spread this initial dosage out over the course of 10 days.

* * Add as regularly as possible. If it is required to miss one day, add that day’s product with the next dosage.

Dosage rate will vary with flow rates, retention times and system variations.

Do not add to the treatment system at a location where toxic or otherwise adverse pH, dissolved oxygen or temperature conditions may exist at peak levels.

For optimal results the wastewater and treatment system should meet the following conditions:
Optimum Minimum
Influent pH 7.0 5.0
Dissolved oxygen, ppm 2.0+ 1.0+
C/N/P ratio 100/10/1 100/5/1
Temperature 30°C (86°F) 10°C (50°F)
Toxic metals, ppm
(E.g., hex., chromium)		 0 0

Storage and Handling:

Storage: Store in a cool, dry place.

Handling: Wash hands thoroughly with warm, soapy water after handling.

See label and SDS for safety information.



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