Microbiological analysis of milk; determination of Escherichia coli; method with liquid medium
Edition 1991-05

German standard methods for the examination of water, waste water and sludge; bio-assays (group L); surfactant biodegradation and elimination test for simulation of municipal waste water treatment plants (L 26)
Edition 1994-05

Microbiological analysis of milk; determination of coliforms; method with liquid medium
Edition 1992-04

Microbiological analysis of milk; determination of Escherichia coli; fluorescence optical method with parallel determination of coliforms
Edition 1992-10

Water quality; detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia); part 2: method by membrane filtration (ISO 6461-2:1986); german version EN 26461-2:1993
Edition 1993-04

Water quality; detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia); part 1: method by enrichment in a liquid medium (ISO 6461-1:1986); german version EN 26461-1:1993
Edition 1993-04

German standard methods for the examination of water, waste water and sludge; sludge and sediments (group S); detection of salmonellae in disinfected sewage sludge (S 13)
Edition 1992-03

Microbiology of the food chain - Horizontal method for the detection and enumeration of Clostridium spp. - Part 1: Enumeration of sulfite-reducing Clostridium spp. by colony-count technique (ISO 15213-1:2023); German version EN ISO 15213-1:2023
Edition 2023-05

Water quality - Pseudomonas putida growth inhibition test (Pseudomonas cell multiplication inhibition test) (ISO 10712:1995); German version EN ISO 10712:1995
Edition 2019-05