Biological, Bacteriological and Virological Examination. A by Michael J. Suess

By Michael J. Suess

Exam of Water for toxins keep watch over: A Reference instruction manual, quantity three: organic, Bacteriological and Virological exam is part of a three-volume reference guide that gives details and suggestions for developing water toxins keep an eye on courses and developing a unified procedure for the research of unpolluted and waste water.
This quantity covers analytical systems correct to the exam of water organisms. A concise and systematic description of tools, reminiscent of sampling, garage, standardization, operation, and calculation correct in quantifying variables referring to water organisms, is equipped.
This publication should be of serious support to execs, akin to overall healthiness officers and epidemiologists whose paintings matters water sanitation.

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For details of filtration and membrane filters, see (5). (c) Staining. After filtration is finished, the membrane is taken out and placed on a marked slide where it is allowed to dry, under either a glass bell jar or a Petri dish. The dry filter is then placed on a filter paper saturated with a 30 g l - 1 solution of erythrosine in a 50 g l - 1 solution of phenol in water. Not all brands of erythrosine are of high enough quality for this purpose and because the powder is light sensitive a highly stable product has to be selected (5).

17. 18. 19. 20. ) Anabaena fio s-aquae (Bréb. ) Gloeotrichia echinulata (Smith et Rieht) Asterionella formosa (Hassall) C y e lo tella b o dan Ica ( E u I e n st. ) Synura petersenii (Korshikov) Cryptomonas ovata (Ehrenberg) Per id in turn bipes (Stein) Ceratium hirundinella ( ( M ü l l . ) W . et G. S. 85 1 — — — — 2 3 pH 5 - 7 pH < 6 3 No. 1-4 = blue-greens (Cyanophyta), 5-8 = diatoms (Bacillariophyceae), 9 - Chrysophyceae, 10 = Cryptophyceae, 11-12 Peridinians (Dinophyceae), 13 = Xanthophyceae, 14 = Euglenophyta, 15-20 green algae (Chlorophyta).

Data are expressed in weight per unit of time.

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