Fecal Coliform - kmutt
Fecal Coliform - kmutt
Fecal Coliform - kmutt
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ตารางที่ 9 เปรียบเทียบขอดี และขอเสียของการวิเคราะห coliform bacteria<br />
โดยวิธี MPN และ membrane filtration (Hutton, 1983 in Gray, 1989)<br />
Multiple tube MPN<br />
Costs<br />
Large quantities of culture media and glassware and large autoclave<br />
Capital costs fairly high<br />
Accuracy<br />
Statistically based estimate Possibly large errors especially at low levels<br />
Field use<br />
Needs static base<br />
Suspended matter<br />
May be used for turbid samples<br />
Convenience<br />
Large amount of material to be prepared prior to analysis and disposed of after<br />
incubation<br />
Incubation times<br />
Up to 48 h or 72 h
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