Validation, verification and comparison: Adopting new methods in water microbiology

Water SA

Volumn 31, Issue 3, 2005, Pages 393-396

  Sartory, David P ^a  

^a Sartory Water Microbiology Consulting   (United Kingdom)

Author keywords

AQC; Comparison; Methods; Validation; Verification; Water microbiology

Indexed keywords

POTABLE WATER; STATISTICAL METHODS; WATER;

DRINKING WATER INSPECTORATE (DWI); EUROPEAN UNION DRINKING WATER DIRECTIVE; WATER MICROBIOLOGY;

MICROBIOLOGY;

DRINKING WATER; MICROBIOLOGY;

EID: 22844436326     PISSN: 03784738     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Review

References (20)

1. ARMON R and PAYMENT P (1988) A modification of m-CP medium for enumerating Clostridium perfringens from water samples. Can. J. Microbiol. 34 78-79.
2. BSI (2003) Water Quality - Enumeration of Micro-Organisms in Water Samples - Guidance on the Estimation of Variation of Results with Particular Reference to the Contribution of Uncertainty of Measurement. DD 260:2003. London: British Standards Institution.
3. COVERT TC, RICE EW, JOHNSON SA, BERMAN D, JOHNSON CH and MASON PJ (1992) Comparing defined-substrate coliform tests for the detection of Escherichia coli in water. J. AWWA 84 98-104.
4. DWI (2000) The Comparison of Methods for Drinking Water Bacteriology - Cultural Techniques. Report of the Drinking Water Inspectorate, Department of the Environment, Transport and Regions, London, UK. (available from http://www.dwi.gov.uk/regs/infolett/2000/pdf/il500pro.pdf) Accessed on 19 October 2003.
5. EUROPEAN UNION (1998) Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption. Off. J. Eur. Comm. 5 Dec 1998. L330/32-L330/53.
6. FRICKER EJ, ILLINGWORTH KS and FRICKER CR (1997) Use of two formulations of Colilert and QuantiTray™ for assessment of the bacteriological quality of water. Water Res. 31 2495-2499.
7. HAVELAAR AH, HEISTERKAMP SM, HOEKSTRA JA and MOOIJMAN KA (1993) Performance characterisation of methods for the bacteriological examination of water. Water Sci. Technol. 27 1-13.
8. ISO (1999a) General Requirements for the Competence of Testing and Calibration Laboratories. ISO/IEC 17025:1999. Geneva: International Organisation for Standardization.
9. ISO (1999b) Water Quality - Enumeration of Culturable Micro-Organisms - Colony Count by Inoculation in a Nutrient Agar Culture Medium. ISO 6222:1999. Geneva: International Organisation for Standardization.
10. ISO (2000a) Water Quality - Detection and Enumeration of Escherichia coli and Coliform Bacteria - Part 1: Membrane filtration method. ISO 9308-1:2000, Geneva: International Organisation for Standardization.
11. ISO (2000b) Water Quality - Detection and Enumeration of Intestinal Enterococci - Part 2: Membrane Filtration Method. ISO 7899-2:2000. Geneva: International Organisation for Standardization.
12. ISO (2000c) Water Quality - Guidance on Validation of Microbiological Methods. ISO/TR 13843:2000. Geneva: International Organisation for Standardization.
13. ISO (2004) Water Quality - Criteria for the Establishment of Equivalency between Microbiological Methods. ISO 17994:2004. Geneva: International Organisation for Standardization.
14. LIGHTFOOT NF and MAIER EA (eds.) (1998) Microbiological Analysis of Food and Water: Guidelines for Quality Assurance. Amsterdam: Elsevier. 266 pp.
15. LIGHTFOOT NF, RICHARDSON IR and HARFORD JP (2001) The use of Lenticules™ for the process control of enumeration techniques in food and environmental microbiology. J. Appl. Microbiol. 91 660-667.
16. SARTORY DP and HOWARD L (1992) A medium detecting β-glucuronidase for the simultaneous membrane filtration enumeration of Escherichia coli and coliforms from drinking water. Lett. Appl. Microbiol. 15 273-276.
17. STANDING COMMITTEE OF ANALYSTS (2002) The Microbiology of Drinking Water 2002 - Part 3 - Practices and Procedures for Laboratories. Methods for the Examination of Waters and Associated Materials. Nottingham: Environment Agency. (available from http://www.envirnment-agency.gov.uk/science/399393/401849) Accessed on 19 October 2003.
18. TILLETT HE and LIGHTFOOT NF (1995) Quality control in environmental microbiology compared with chemistry: what is homogeneous and what is random? Water Sci. Technol. 31 471-477.
19. TILLETT HE and SARTORY DP (2004) Measurement uncertainty in water microbiology may not estimate the laboratory's precision. Accredit. Qual. Assur. 9 629-632.
20. USEPA (1995) Protocol for Alternative Test Procedures for Coliform Bacteria in Compliance with Drinking Water Regulations - Presence/Absence Membrane Filter Methods for Finished Waters. Cincinnati: US Environmental Protection Agency.