Lovibond® Water Testing Tintometer® Group

SRB

SRB is used to detect the presence of sulphate reducing bacteria (SRB’s) in oxygen deficient water systems. In anaerobic conditions, sulphate reducing bacteria utilise the oxygen in sulphates for ‘breathing’ and reduce the sulphates to sulphides. Toxic, flammable and corrosive hydrogen sulphide gas is also an end product of SRB activity.  The test consists of a pre-filled tube containing iron sulphide gel and a capillary tube.  Simply dip the capillary into the sample water and “spike” it into the gel.  Cap the tube and incubate at 30—35oC for 24-48 hours.   SRB’s will turn the opaque gel black.  Severe contamination will be seen within 24 hours whereas slight contamination will take 48 hours to be detected.

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