Petrolabs HUM Out is a water soluble product, EPA registered as a biocide for the control of bacteria and fungi growth in oils and refined fuels. Approved for use in California.  H.U.M. OUT will control microorganisms in fuel oil storage tanks, fuel oil and other refined or partially refined oils.  H.U.M. OUT is an EPA FIFRA registered antimicrobial that mixes solely in the water phase of the fuel storage tank; therefore, is not a fuel additive. Petrolabs HUM OUT is an effective fuel biocide and eliminates microbial growth in diesel fuel such as slime mats.

Used regularly, Petrolabs HUM Out will reduce the following:

• Kills bacteria and algae
• Prevents tank corrosion
• Slime mats
• Odors
• Fuel oil filter deposits and plugging
• Vehicle fuel tank deposits and corrosion
• Fuel-water separator deposits
• Injector plugging
• Excess carbon deposit and exhaust gas smoke
• 1 oz treats 120 gallons