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| Analytical test filter funnels, CN membrane. Low-cost disposable, sterile filter funnels for microbiological analysis. Cat. NA-147 features gray, water quality cellulose nitrate membrane with white grid. The membrane turns black when wet, making it easier to detect and count growing colonies. Upper separates easily from lower for easy access to the membrane. Funnel adapter allows use with No. 8 stoppers (Cat. No. DS0396-0080). Six funnel adapters included with each case. Also sold separately, Ref. NA-DS0397. Color = membrane/grid. |
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