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Sulfate Reducing Bacteria (SRB) Tests (Box of 10)

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  • SRB testing tubes
  • SRB test kit
  • Sulfate Reducing Bacteria Growth
SRB testing tubes

Sulphate Reducing Bacteria (anaerobic culture gel) test tube / SRB Test Kit.

Pack Size
10 dipslides

Made in the UK
Manufactured in ISO 9001 certified conditions.
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Product Information
Shelf Life Minimum of 3 months
Certification ISO 9001

About the sulfate reducing bacteria (srb) tests (box of 10)

What is a SRB Test?

Sulphate reducing bacteria (SRB) is a bacteria that can obtain energy by oxidising organic compounds / molecular hydrogen and reducing sulphate (sulfate) to hydrogen sulfide. In essence, this bacteria 'breathes' sulphate. The SRB test is a small vial containing a culture gel that turns black if sulphites are present in the test sample.

Sulphites are produced when sulphates are reduced by bacteria. The amount of colour change can be compared with the included chart to help determine the level of contamination.

Sulphate reducing bacteria are anaerobic organisms that cause corrosion and spoilage in multiple industries. The bacteria can cause particular damage to oil pipelines and metal parts.


  • Survives in oxygen depleted / oxygen free environments.
  • Corrodes at a very fast rate.
  • Reduces sulphates and creates hydrogen sulfide.
  • Resultant hydrogen sulfide gives off a foul 'rotten egg' odour.
  • Other signs of its presence in water is a change in colour (to black).
  • Major cause of microbial influenced corrosion.

The SRB test kit comes in a pack size of 10 slides / tests per box. 

  • Add 2ml of the test sample to the tube. To aid the user, 2ml of test sample can be determined by adding the sample up to the moulded line in the tube.
  • Incubate the SRB test / dipslide at 30 degrees C for up to 5 days. Check the test daily for the first three days.
  • If there is no colour change after 5 days, this indicates a negative result.

How to use SRB Tests

Remove SRB test kit cap.

Remove SRB test cap

Remove one SRB test from the SRB test kit and unscrew the cap (anticlockwise) to remove it.

Add 2ml of sample fluid to the SRB test.

Add 2ml of sample fluid

Add 2ml of sample fluid to the SRB test. If you do not have a measuring syringe, fill the tube up to the embedded fill line on the tube (which equals 2ml).

Replace the cap

Replace the cap

Replace the cap on the SRB test and incubate accordingly.

Compare results

Check the SRB test

Compare the SRB colouration with the chart provided.

For incubation, we recommend using our compatible SRB incubator which can be found here: SRB Incubator

Industry sectors include

  • Industrial Water
  • Cooling tower water
  • Boiler feed water
  • Process water
  • Metal cutting fluids

Additional Details

Product Reference : DSSRB

Internal catalogue reference : DS001-7

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