Violet Red Bile Lactose Agar

Agar for the quantitative detection of E. coli and coliform bacteria in water

Product description

Crystal-violet, neutral red bile lactose agar (pH 7.4 ± 0.2) is a ready-to-use agar for the selective isolation and bacterial count determination of coliform bacteria in water samples and other materials with hygienic significance (e.g. rinse water), in accordance with the American Public Health Association (APHA) and ISO 4832.

The bile salts contained in the agar and the crystal-violet dye suppress the growth of Gram-positive cocci. The neutral red indicator dye changes from red to yellow in the 6.8-8.0 pH range. This allows a simple visual analysis.

Order information

Product nameOrder numberDescriptionContent
Violet Red Bile Lactose Agar 8.43331.2448.43331.244
Application: quantitative detection
of E. coli and coliform bacteria
6 x 200 ml

Basic information

pH value Incubation T [°C]Duration (days)
7.4 +/-0.2361

Storage and shipping information

Storage temperature T [°C]Shelf life (months)

Packaging information

6 x 200 mlGlass bottles in cardboard box

Please contact our distributors or Döhler directly.



Dematech Pty Ltd.13 Michigan Street
Airport Industria
Capetown 7490
South Africa 385 04 83
AustraliaDirectus Australia96 Woolwich Rd
Hunters Hill
NSW, 2110
Australia 2 9844 2100
ChinaShanghai Sunny Biological Science
and Technology Co.Ltd

Room 1706
No.1619 Dalian road
Hongkou District
Zip: 200086 021 55884753
+86 135 24671568
New ZealandDirectus New ZealandSuite 2, Level 1, Heards
168 Parnell Road
Auckland, 1052
New Zealand 9 309 7783
USAWeber Scientific2732 Kuser Road
Hamilton, NJ, 08691
USA 800 328 8378
rest of worldDöhler GmbH

Riedstraße 7-9
64295 Darmstadt
Germany (0)6151/306-0

*excl.: Libya, Sudan, Morocco, Mauritania, Western Sahara, Tunisia, Egypt, Algeria

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