Water Microbiology (QWAS)
"Choose from 18 types of water sample with our water microbiology proficiency testing scheme"
Our QWAS Water Microbiology proficiency testing scheme is the world’s largest water microbiology proficiency testing programme, trusted by more than 1,000 participating laboratories globally. Established in 2002, it offers a comprehensive choice of 18 water samples – including potable, process, mineral, effluent sludge, industrial, surface/waste/bathing, recreational, sea, dialysis and wastewaters. In addition, it features our best-selling PT-WT-412 sample for the enumeration of E. coli, coliforms, and Enterococci (faecal streptococci).
As well as helping laboratories ensure water safety, and comply with testing regulations in a wide range of countries and regions, successful participation in QWAS can provide laboratories with confidence in their results and the equipment they use.
PT Water Microbiology Accreditation
Please see individual products for specific accreditation status See our accreditations
Scheme Information
Round Dates
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- Product Code: PT-WT-429
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Dialysis water
- Analytes: Total aerobic count at 17-23°C 0-1000 cfu/ml
- Product Code: PT-WT-426
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Water
- Analytes: Identity of Organism -
- Product Code: PT-WT-434
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Water
- Analytes: Detection of Salmonella species 0 - 10,000 Detected/Not Detected L
- Product Code: PT-WT-432
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Effluent sludge
- Analytes: Enumeration of Enterococci All cfu/ml
- Product Code: PT-WT-412
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Potable water
- Analytes: Enumeration of Enterococci (faecal streptococci) 0 - 1000 cfu/100mL + 4 more
- Product Code: PT-WT-413
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Potable water
- Analytes: Detection of sulphite-reducing clostridia 0 - 1000 cfu/100mL + 7 more
- Product Code: PT-WT-419
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Bathing, surface and wastewater
- Analytes: Detection of Salmonella species 0 - 10,000 Detected/Not Detected/LDetected/Not Detected L + 4 more
- Product Code: PT-WT-417
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Environmental water
- Analytes: Detection of Legionella pneumophila 0 - 100,000 cfu/L + 4 more
- Product Code: PT-WT-423
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Potable water
- Analytes: Detection of Legionella species at low levels 0 - 1000 - + 2 more
- Product Code: PT-WT-418
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Environmental water
- Analytes: Detection of Legionella species 0 - 100,000 cfu/L + 4 more
- Product Code: PT-WT-420
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Mineral water
- Analytes: Enumeration of Enterococci (faecal streptococci) 0 - 1000 cfu/250mL + 4 more
- Product Code: PT-WT-414
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Process water
- Analytes: Enumeration of Pseudomonas aeruginosa 0 - 1000 cfu/mL + 5 more
- Product Code: PT-WT-421
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Bathing, recreational and surface water
- Analytes: Enumeration of Clostridium perfringens 0 to 100000 cfu 100 ml-1 + 4 more
- Product Code: PT-WT-416
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Effluent sludge
- Analytes: Detection of Salmonella species 0 - 10,000 cfu/100mL + 2 more
- Product Code: PT-WT-422
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Sea water
- Analytes: Detection of Salmonella species 0 - 10,000 Detected/Not Detected/LDetected/Not Detected L + 4 more
- Product Code: PT-WT-424
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Mineral water
- Analytes: Detection of coagulase-positive staphylococci 0 - 1000 cfu/250mL + 2 more
- Product Code: PT-WT-425
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Potable water
- Analytes: Detection of Escherichia coli 0 - 100 cfu/100mL + 2 more
- Product Code: PT-WT-431
- PT Scheme: Water Microbiology (QWAS)
- Brand: AXIO
- Matrix: Water
- Analytes: Detection of Somatic coliphages Positive/Negative + 1 more
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