Heterotrophic bacteria in water
Incubation Time
44 +/- 4 hours
68 +/- 4 hours
Incubation Temperature
36 +/- 2°C (filter/ SMEWW method)
22 +/- 2°C (ISO6222:1999)
Following guidelines set by the World Health Organization (WHO), treated drinking water should be free from contaminating microorganisms. Heterotrophic Plate Count (HPC) represents the total...
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Following guidelines set by the World Health Organization (WHO), treated drinking water should be free from contaminating microorganisms. Heterotrophic Plate Count (HPC) represents the total microbial count in water, including bacteria, yeast, and mould.
CompactDry AQ, is a ready-to-use selective dehydrated media plate for the detection and enumeration of heterotrophic bacteria in drinking water and ultra-pure water.
It is composed of a nutrient-poor culture medium for bacteria adapted to nutrient-poor conditions. The chromogenic substrate results in red heterotrophic bacteria colonies after incubation, allowing simplified visualisation and enumeration.
Red : Colonies are almost all red.
Yeast tends to grow as white-pink colonies.
Moulds grow as a typical 3-dimensional cotton wool form.
Step #1
Remove the cap
Step #2
Dispense 1 mL of sample in the middle of the CompactDry plate
Step #3
The sample diffuses passively and evenly across the dehydrated media sheet, rehydrating the dry medium into a gel within seconds
Step #4
Replace the lid and label the plate
Step #5
Turn over the plate (lid down) and incubate for the appropriate time and temperature
Step #6
Following incubation, count the number of coloured microbial colonies
Incubation Time
44 +/- 4 hours
68 +/- 4 hours
Incubation temperature
36 +/- 2°C (filter/ SMEWW method)
22 +/- 2°C (ISO6222:1999)
Shelf Life
24 months
Storage Temperature
RT +1°C to +30°C
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