The method describes the determination of Pseudomonas aeruginosa in mineral, spring and table water.
Mineral, spring and table water as well as drinking water to be marketed.
Qualitative detection of Pseudomonas aeruginosa in mineral water, spring water, table water and other drinking water bottled for distribution to the consumer by means of enrichment culture in double-concentrated malachite green peptone broth [1].
Mineral, spring and table waters as well as drinking waters that are to be marketed.
Qualitative detection of Pseudomonas aeruginosa in mineral water, spring water, table water, and other drinking water filled for delivery to the consumer, by means of membrane filtration (MF) and soaking the filter in single-strength malachite green peptone broth [1, 2].
Mineral, spring and table waters as well as drinking waters that are to be marketed.
Detection of the total bacterial count from 1 ml test quantity in mineral water, spring water, table water and other drinking water bottled for distribution to the consumer using Koch's pour-plate method and a nutrient-rich, peptone-containing culture medium [1, 2].
Mineral, spring and table waters as well as drinking waters that are to be marketed.
Qualitative detection of faecal streptococci in mineral water, spring water, table water and other drinking water bottled for distribution to the consumer by means of enrichment culture in double-concentrated azide-glucose broth [1].
Mineral, spring and table waters as well as drinking waters that are to be marketed.
Qualitative detection of sulphite-reducing, spore-forming anaerobes in mineral water, spring water, table water, and other drinking water bottled for distribution to the consumer, by means of membrane filtration and immersion of the filter in single-concentrate dextrose-iron citrate-sodium sulphite broth (DRCM broth).
Note 1: If only the spores of sulphite-reducing anaerobes are to be analysed, the prescribed sample volume must be heated at 75 °C ± 1 °C for 10 minutes in order to inactivate the vegetative cells. Then cool quickly with cold water.
Important: Carry out a comparative test with the same volume of tap water to determine the total heating time required in the water bath.
Mineral, spring and table waters as well as drinking waters that are to be marketed.
Qualitative detection of sulphite-reducing, spore-forming anaerobes in mineral water, spring water, table water, and other drinking water bottled for distribution to the consumer, by means of membrane filtration and placing the filter on a solid culture medium.
Note 1: If only the spores of sulphite-reducing anaerobes are to be analysed, the prescribed sample volume must be heated at 75 °C ± 1 °C for 10 minutes in order to inactivate the vegetative cells. Then cool quickly with cold water.
Important: Carry out a comparative test with the same volume of tap water to determine the total heating time required in the water bath.
Membrane filtration (MF) and placing the filter on dextrose-iron sulphate-sodium sulphite agar (DRCM agar) (corresponds to method Annex 2, point 4 a of § 4 para. 3 of the German Mineral and Table Water Ordinance, MTV) [1].