One laboratory-made H2S test plus two commercial H2S products manufactured and available in the
Indian marketplace: TARA Aquacheck and ORlab. In all three H2S tests evaluated, the H2S bacteria test is
a 20 mL P/A test that detects the presence of H2S producing bacteria, an alternative indicator of fecal
contamination to E. coli. The lab-made H2S bacteria test in this study utilizes the Manja et al. [5]
procedure to inoculate and sterilize homemade paper test strips with bacterial media. The test was