Water intended for use as an ingredient in the production of beer (brewing liquor) or other foods
For determination of the dry residue in water after filtration, a certain quantity of filtrate is evaporated until dry. It is subsequently dried in a drying oven to eliminate any remaining moisture.
Water intended for use as an ingredient in the production of beer (brewing liquor) or other foods
Determination of the dry residue (ash content) of a filtered or unfiltered water sample.
Membrane filtration is a simple way of concentrating microorganisms from a liquid sample.
Filtered beers
Membrane filtration and anaerobic incubation
Membrane filtration is a simple way of concentrating microorganisms from a liquid sample.
Quantitative enrichment of large, filterable volumes on nutrient agar plates
Membrane filters with pore sizes of 0.65 µm retain yeasts from the liquid sample, which are then incubated aerobically on agar nutrient media. The filtrate is collected in a receiving container and then discarded. The colonies that have grown are then counted and analysed under a microscope.