Biocide Selection

National Colloid offers a selection of over 30 different biocides. Halogen tablets, DBNPA, sodium bromide, and isothiazoline are just a few of the options. With so many choices, how should you begin to address microbiological issues? The process can seem overwhelming.

Biocide SelectionOur employees have the experience and expertise to help you choose the right products for all of your biological treatment applications. We will evaluate your equipment and operations before making recommendations to suit all of your treatment needs.

In addition to the products listed under manufacturers’ label in the list below, we have a number of microbiocides that can be private labeled under your company name. They include 5% and 20% DBNPA, 1.5% isothiazoline, granular and tableted BCDMH, 40% sodium bromide, 15% and 30% WSCP, and stabilized bromine.

We will create custom labels and MSD sheets for your private label products, and can assist in biocide registration in any state. Let the experts at National Colloid handle all of your biocide-related needs.

  • View Biocides Available Under Manufacturer's Label

    Product Name Ingredient(s) Description
    1.5% isothiazoline 1.5% methyl-chloro isothiazoline This product controls a wide variety of algae, bacteria and fungi found in industrial water systems. It is a broad spectrum product.
    AQUCAR™ 504 4% Glutaraldehyde A 4% aqueous solution of glutaraldehyde. It is especially effective in controlling slimeforming bacteria, sulfate-reducing bacteria and algae in water cooling towers, air washers, pasteurizers, and other recirculating water systems.
    AQUCAR™ 742 Glutaraldehyde/quaternary ammonium This product is widely used in a variety of oil and gas operations as well as water treatment systems.
    Bellacide 300 5% TTPC/Polyquat Blend Competitive, capable, and compatible biocide for oil and gas applications.
    Bellacide 301 5% TTPC/Polyquat Blend Highly effective, synergistic biocide and biodispersant. Provided bactericidal and algaecidal properties in cooling water and industrial process water.
    Bellacide 325 4% aqueous dispersion of terbuthylazine (TBZ) A highly effective specialized algaecide for use in industrial cooling and ornamental water systems.
    Bellacide 355 5% active tributyl tetradecyl phosphonium chloride (TTPC) Bellacide 355 is a concentrated 5% active nonoxidizing biocide containing tributyl tetradecyl phosphonium chloride (TTPC) which eliminates SRB and APB effectively, controls and helps eliminate biofilm, and is very safet to handle.
    BioSide HS 15% 15% peracetic acid and 22.5% peroxide Broad spectrum oxidizing biocide, pH range as high as 9.5. Controls slime and bio-fouling. No limitations on discharge do to half-life or halogen concerns.
    BromMax® Stabilized bromine, 10.2% active The world’s most concentrated liquid stabilized bromine biocide used for control of bacterial, algal and fungal slime in industrial and commercial recirculating cooling water systems.
    BromMax® 7.1 Stabilized bromine, 7.1% active Liquid stabilized bromine biocide used for control of bacterial, algal and fungal slime in industrial and commercial recirculating cooling water systems.
    CDB-56 Granular Sodium dichloro-s-triazinetrione dihydrate, 56% available chlorine Isocyanurate-stabilized, dry source of chlorine, 56% available chlorine, (granular).
    CDB-90 100% Sodium trichloro-S-triazinetrione (3 inch tablets) Isocyanurate-stabiliized, dry source of chlorine (90% available chlorine)
    DBNPA, 5% 5% 2,2-Dibromo-3-nitrilopropionamide Quick kill non-oxidizing biocide used to control microbial, fungal and algal growth in industrial water systems (effective against Legionella).
    DBNPA, 20% 20% 2,2-Dibromo-3-nitrilopropionamide Quick kill non-oxidizing biocide used to control microbial, fungal and algal growth in industrial water systems (effective against Legionella). Short half-life.
    Dimet 1250 12.5% Potassium dimethyldithiocarbamate Used to control algae, sulfate reducing bacteria, slime forming bacteria, and slime forming fungi in cooling towers, air washing systems, water purification systems, and petroleum secondary recovery water flooding operations.
    Glut/Quat 14:2.5 14% glutaraldehyde with quaternary ammonium compound An aqueous blend of glutaraldehyde and quaternary ammonium. Effective in controlling slime-forming bacteria, sulfate reducing bacteria and algae in water cooling towers, air washers, pasteurizers, and other recirculating water systems.
    Glutarladehyde, 15% 15% Glutaraldehyde A 15% aqueous solution of glutaraldehyde. It is especially effective in controlling slimeforming bacteria, sulfate-reducing bacteria and algae in water cooling towers, air washers, pasteurizers, and other recirculating water systems.
    Glutaraldehyde, 25% 25% Glutaraldehyde A 25% aqueous solution of glutaraldehyde. It is especially effective in oilfield applications.
    Glutaraldehyde, 45% 45% Glutaraldehyde A 45% aqueous solution of glutaraldehyde.It is especially effective in controlling slime forming bacteria, sulfate-reducing bacteria and algae in water cooling towers, air washers, pasteurizers, and other recirculating water systems.
    K-BROM 40 40% NaBr. Use with OCl. (2 parts 150 to 1 part 152) Broad spectrum biocide for control of algal, bacterial and fungal slimes in water systems.
    K-BROM T 98% bromochloro-5,5-dimethylhydantion A broad spectrum biocide for control of algal, bacterial and fungal slimes in industrial water systems, effective over a wide pH range (6-10). (available in granular form)
    Perasan® A 5.6% peracetic acid and 26.5% peroxide Perasan A contains 5.6% peroxyacetic acid and 26.5% hydrogen peroxide, with a small amount of acetic acid. Perasan A pairs highly effective antimicrobial properties with a very favorable environmental profile. It is non- corrosive to stainless steel, and has no harmful disinfection by-products.D1
    ROCIMA™ 586 Isothiazoline/Bronopol A VOC-free, broad spectrum preservative for water-based household and industrial products and raw materials, offering enhanced stabilization of the CMIT component and clearances with the FDA and BfR.
    Sodium hypochlorite 12.5% sodium hypochlorite Commonly known as ‘bleach’, sodium hypochlorite has broad spectrum use in cooling water as a disinfectant, germicide, algaecide and anti-slime agent.
    TOLCIDE® PS 20A THPS A rapid acting, broad spectrum, non-foaming, wide application pH (3-11.5) range, multipurpose biocide plus Iron sulfide (FeS) dissolution, enhanced separation.
    Towerbrom® 90M 92% Sodium trichloro-S-triazinetrione and 7% NaBr (3 inch tablets) Easy to handle tablet. Designed for continuous feed to recirculating systems.
    Towerchlor® 56 Granular Sodium dichloro-s-triazinetrione dihydrate, 56% available chlorine Quick dissolving Towerchlor 56 Granules are ideal for shock feeding. Dispensed by hand, Towerchlor 56 Granules almost immediately dissolve for quick release of its active halogen. Solutions are nearly pH neutral, so it has virtually no effect on the cooling water pH.
    Towerchlor® 60 89% Sodium dichloro-S-triazinetrione and 7% NaBr Solid, safe, easy to handle granular oxidizing biocide for once-through and recirculating systems.
    Towerchlor® 90 100%Trichloro-s-triazinetrione Isocyanurate-stabiliized, dry source of chlorine (90% available chlorine)
    Ultra-Kleen Solution #1 6% quaternary ammonium, 6% peroxide Penetrates and removes biofilm and other organic contaminants. Is categorized as a bactericide and slimicide.
    WSCP 1500 15% Poly(oxyethylene(dimethyliminio)ethylene- (dimethyliminio)ethylene dichloride) Used to control algae, slime forming bacteria, and slime forming fungi in cooling towers, air washing systems, and decorative fountains.