ISO 6461-2-1986 Water quality Detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia) Part 2 Method by membrane filtration《水质 亚硫酸盐还原厌.pdf

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1、Norme internationale 646112 INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWVlE)(L1YHAPOHAR OPfAHM3Al.lMFl Il0 CTAHAPTI43AL pour les eaux trs pollues ou pour les eaux dgot, utiliser des volumes plus faibles. Les volumes deau infrieurs 10 ml doivent tre additionns de 10 100 ml deau strile ou dun dilua

2、nt. Les dilutions doivent tre prvues de telle manire que les ven- tuelles colonies noires apparaissant soient bien spares et faci- les compter. Le procs-verbal dessai doit indiquer la mthode utilise et exprimer les rsultats en tant que nombre dorganismes anaro- bies sulfito-rducteurs (clostridia) pa

3、r volume dchantillon. Lnumration aprs 44 + 4 h doit habituellement tre indi- que. Si cela nest pas possible, lnumration aprs 20 + 4 h sera indique seulement comme valeur approximative. Le procs-verbal dessai doit galement mentionner tous dtails du mode opratoire non spcifis dans la prsente partie de IISO 6461 ou considrs comme facultatifs, ainsi que tout inci- dent susceptible davoir influenc les rsultats. Le procs-verbal dessai doit don ner toutes les informations ncessaires permettant d identifier compltement lchantillon. Page blanche Page blanche Page blanche

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