Broad-Spectrum Bromine Biocide – 0021

This product is no longer available and has been replaced by Accepta 2343


Accepta 0021 is a high performance broad-spectrum liquid bromine based biocide. It is particularly effective when used to maintain microbiological control in re-circulating cooling systems where conditions are ideal for bacteriological growth and an effective biocide is essential.

Accepta 0021 is effective at the high pH values often encountered in open cooling systems. It is effective across the range of pH from 6.0 to 10.0, whereas chlorine is less effective at higher pH.

Product Benefits

  • High performance broad-spectrum liquid bromine based biocide.
  • Effective against Legionella species.
  • Assists in removal of biomass from pipework.
  • pH range 6.0 – 10.0.
  • Compatible with corrosion and scale inhibitors.
  • Components and degradation products have low animal and fish toxicity and are biodegradable.
  • Simple to test and control.
  • Can be dosed directly from the drum for ease of dosing and handling.
  • Suitable for automatic dosing and control.

Product Properties

Form: Liquid
Colour: Colourless
Odour: Slight aromatic
pH: 6.0 – 8.0
Water solubility: Miscible
Relative density: 1.15 – 1.25

*Full details of the product properties are available in the Safety Data Sheet. See below.

Application & Dosage Information

Accepta 0021 may be dosed intermittently or continuously by the use of a dosing pump directly from the drum. The precise dosage rate and frequency will be advised for each specific application.

When applied to cooling systems as an oxidising biocide care should be taken to ensure that a suitable corrosion inhibition programme is in operation.

This product is rapidly and totally oxidised to hypobromous acid/hypobromite when mixed with stoichiometric oxidative equivalents of sodium hypochlorite.


A simple test method for on-site analysis can be employed to ensure the precise level of bromine required is maintained. The ideal level for your system will be advised by our technical consultant.

Automatic dosing, utilising redox control can be employed if required.

Visual or microscopic examination, biological dipslides, a biofouling indicator and other checks by our laboratory at intervals will indicate if any changes in treatment are required.

Safety, Storage & Handling

For full details concerning safety precautions, storage and handling procedures for this product please refer to the latest Safety Data Sheet. To request the latest MSDS for this product please fill out the form below.

    Additional information

    Weight 25 kg