Product Technical Bulletin


Material Safety Data Sheet 

Benzene Bioremediation Chart 

 Toluene Bioremediation Chart




ALKEN CLEAR-FLO® 7038 is a concentrated dry blend of selected bacteria targeted to rapidly degrade the major components of gasoline, specifically benzene, toluene and xylene. Recommended for application to light end petroleum distillates. The strains in this formula can tolerate gasoline concentrations that would inhibit many indigeonous bacterial populations.


 Bacteria Count  3 Billion Colony Forming Units/gram
 Appearance  Free flowing brown powder
 Odor  Yeast Like


  • Rapidly decontaminates soil and groundwater containing gasoline, as a result of leaking underground storage tanks, transfer line leaks and spills.
  • Reduces further environmental damage by degrading the contaminant plume.
  • Cultures can tolerate diesel concentrations inhibitory to many indigenous populations.
  • Supplementing existing cultures with this formula will generally accelerate the decomposition process, achieving faster degradation to the desired end point, in less time than nutritional stimulation of indigenous bacterial populations.
  • Can tolerate up to 20 ppm concentration of heavy metals.
  • Effective over a wide temperature range (40 to 100F; optimum 75± 10 F)
  • Effective over a wide pH range (6.0 to 8.5; optimum 7.1 ± 0.3)
  • Non-toxic, non-corrosive, safe to handle and store when used as directed



For concentrated petroleum hydrocarbon bioremediation, maintain at least 1.0 mg/l of ammonium nitrogen and 0.5 mg/l of ortho-phosphate. ALKEN® BIO-NUTRIENT 4 contains these nutrients together with micronutrients, other accelerants and nitrification inhibitor, to prevent nitrification (oxidation of required ammonia-nitrogen to nitrate), thereby reducing dosage of nutrient product, when compared with ALKEN® BIO-NUTRIENT 3, which is used for wastewater treatment and does not inhibit nitrification. The strains in this formula degrade hydrocarbons aerobically, requiring at least 1 ppm of oxygen, with 2 to 5 ppm being ideal. Hydrogen sulfide remediation can be performed both aerobically and anaerobically by this formula.



For optimum bacterial performance, hydrate ALKEN CLEAR-FLO® 7038 before application, thoroughly mix each pound of dry product with two gallons of warm (approx.70 F) water without chlorine. Allow the mixture to hydrate for two hours, stirring vigorously every 30 minutes, or else stir continuously for 2 hours. For soil applications, use of a slow-release calcium or magnesium peroxide product will deliver optimum results. Alken-Murray endorses the product ORC (oxygen release compound) manufactured by unrelated company, Regenesis.

For application to land spills: Alken-Murray suggests that you obtain the services of an environmental engineering firm for geological and engineering assessment and application, to ensure safety and compliance with all regulations. Dosage per cubic yard of soil contaminations is 0.5 to 0.75 lb., applied once a month, until soil is remediated. Application of ALKEN CLEAR-FLO® 5100 to soil applications delivers petroleum emulsifying surfactants, germination catalyst, ALKEN 896® and endospore-forming Bacillus that target secondary metabolites, especially long-chain fatty acids, but petroleum-hydrocarbon degrading Bacillus are also included.



 Industrial/Municipal dosage charts
for general application rates for lagoons, activated sludge systems, lakes or ponds which have been contaminated by a petroleum oil spill. Mechanical aeration is required for treatment of petroleum hydrocarbon contaminated wastewater, or other aquatic environments. Since this product contains no surfactants or pathogenic bacteria, it is safe to apply ALKEN CLEAR-FLO® 7038 to lakes, ponds or the ocean, where fish and wildlife are present.

Alken-Murray's authorized distributors can assist you with product selection and other treatments based on submission of the Petroleum Bioremediation Diagnostic Survey from the Alken-Murray Diagnostic Form Frame Set.

Avoid use of algaecides, herbicides, and antibiotics when using any ALKEN CLEAR-FLO® product.



ALKEN CLEAR-FLO® 7038 is packaged in 25 lb. plastic pails and 50 lb. fiber drums. Store in a cool dry place. Avoid inhalation of dust. Wash hands with warm, soapy water after handling.

Update: 04-30-2006


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