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REFERENCE MATERIALS FOR MICROBIOLOGICAL TESTING OF WATER

Objective



Various sorts of water (e.g. bathing water, tap water) are frequently monitored for their microbiological quality. False analytical results may have economic and public health consequences such as: unnecessary delay in taking repaired drinking water system back into use, unnecessary corrective actions after tests with false positive results, unnecessary condemnation of water sources for e.g. food industry, unnecessary constraints on the trade of mineral water or shellfish, unnecessary condemnation of bathing beaches, illness caused by undetected microbes in polluted water, etc. Intercomparisons have indicated that 5-15 % of all results are incorrect. Stability is the main difficulty in developing microbiological RM's. There is evidence that good stability can be achieved by isolating microbes in milk in gelatine capsules.

STATUS

Five intercomparisons have been conducted to study the stability of the materials during transport, reconstitution of lethally stressed micro flora and the various official tests for total coli and thermo tolerant coliforms. E. coli, E. Faecum and E. cloacae have been studied. The certification of E. faecum is foreseen for 1992.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

RIVM
Address
9,A. Van Leeuwenhoeklaan
3720 BA Bilthoven
Netherlands

Participants (27)

Athens School of Hygiene
Greece
Address
196,Leoforos Alexandras Avenue
11521 Athens 618
CIVO-TNO
Netherlands
Address
48,Utrechtseweg
3704 HE Zeist
Campden and Chorleywood Food Research Association (CCFRA)
United Kingdom
Address
Station Road
GL55 6LD Chipping Campden
Danish Veterinary Service
Denmark
Address
13,Howitzvej
2000 Frederiksberg
Eastern Health Board
Ireland
Address
10,Corn Market
8 Dublin
INSA - Inst. Nacional de Saude Dr. Ricardo Jorge
Portugal
Address
Av. Padre Cruz
1699 Lisboa
Institut for Veterinary Medicine of the Federal Health Office
Germany
Address
Thielallee 88-92
14195 Berlin
Institut für Veterinärmedizin
Germany
Address
Thielallee
14195 Berlin
Instituto de Salud Publica de Navarra
Spain
Address
15,C/ Leyre
31003 Pamplona
Lab. Nac. de Engeharia e Tecnol. Industrial
Portugal
Address
1,Rua Vale Formoso
1000 Lisboa
Laboratoire National de la Santé
Luxembourg
Address
1A,rue Aguste Lumire
1960 Luxembourg
MAFF CENTRAL VETERINARY LABORATORY
United Kingdom
Address
New Haw
K115 3NB Weybridge
Ministère de l'Agriculture
France
Address
43 Rue De Danzig
75015 Paris
Ministère de l'Agriculture
France
Address
43 Rue De Danzig
75015 Paris
National Food Administration
Sweden
Address

75126 Uppsala
Nestec Ltd.
Switzerland
Address
55,Av. Nestlé
1800 Vevey
Nestle Nederland
Netherlands
Address
106,Laan
8071 CJ Nunspeet
Public Health Laboratory Service
United Kingdom
Address
61 Colindala Avenue
NW9 5HT London
RHEINISCHE FRIEDRICH-WILHELMS-UNIVERSITAET BONN
Germany
Address
Meckenheimer Allee 168
53115 Bonn
Rijkszuivelstation
Belgium
Address
370,Brusselsesteenweg
9090 Melle
Royal Veterinary and Agricultural Univ.
Denmark
Address
13,Bulowsvej
1870 Frederiksberg C
State Institute for Quality Control of Agricultural Products
Netherlands
Address
45,Bornsesteeg
6708 PD Wageningen
Univ. College Dublin
Ireland
Address

4 Dublin
Universidad de Lleida
Spain
Address
177,Avda. Alcade Rovira Roure
25006 Lleida
Universiteit Gent
Belgium
Address
653,Coupure Links
9000 Gent
Università degli Studi di Bologna
Italy
Address
Via Tolara Di Sopra
40064 Ozzano Dell'emilia Bologna
Università degli Studi di Udine
Italy
Address
Piazza Kolbe
33100 Udine