Presence-Absence Broth

Presence-Absence Broth is used for the detection of coliform bacteria in water from treatment plants or distribution systems using the presence-absence coliform test.

Principles Enzymatic Digest of Gelatin, Enzymatic Digest of Casein, and Beef Extract provide amino acids, peptides, carbohydrates, vitamins, and trace elements. Lactose is the fermentable carbohydrate. Dipotassium Phosphate and Monopotassium Phosphate serve as pH buffers. Sodium Chloride maintains the osmotic balance. Sodium Lauryl Sulfate is the selective agent, inhibiting many organisms except coliforms. Bromocresol Purple is used as an indicator dye. Lactose-fermenting organisms acidify the medium, thus causing a color shift from purple to yellow with or without gas production.

Description/Item No. Brand Mfr. Item No. Qty. Your Cost/Qty Purchase
Presence-Absence Broth
3095-50
Difco 219200 500 gram
$125.31
$106.51/EA
15% discount
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Presence-Absence Broth
3095-55
Difco 219100 2 kg
$501.30
$426.11/EA
15% discount
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Presence-Absence Broth
3114-40
Criterion C6631 500 gram
$84.71
$52.52/EA
38% discount
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Presence-Absence Broth
3114-50
Criterion C6632 2 kg
$304.74
$188.94/EA
38% discount
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Presence-Absence Broth
3116-68
Alpha Biosciences P16-110 500 gram
$91.23
$45.62/EA
50% discount
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Presence-Absence Broth
3116-69
Alpha Biosciences P16-110 2 kg
$331.84
$165.92/EA
50% discount
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