. Practical methods of organic chemistry . Fig. 36. Fig. 37. Fig. 38. Similar to the Biichner funnel in its construction and action isthe so-called Nutsch filter. This consists of a shallow dish witha perforated bottom, which isfitted to the cover of a tubu-lated cylinder by means of arubber ring, the joint beingair-tight. This apparatus isespecially adapted to the filtra-tion of larger quantities thancan be conveniently treated inthe Biichner funnel (Fig. 39). If the solution to be filteredacts on the filter-paper, filter-cloth may be used in its fine or coarse meshed clothis selected
. Practical methods of organic chemistry . Fig. 36. Fig. 37. Fig. 38. Similar to the Biichner funnel in its construction and action isthe so-called Nutsch filter. This consists of a shallow dish witha perforated bottom, which isfitted to the cover of a tubu-lated cylinder by means of arubber ring, the joint beingair-tight. This apparatus isespecially adapted to the filtra-tion of larger quantities thancan be conveniently treated inthe Biichner funnel (Fig. 39). If the solution to be filteredacts on the filter-paper, filter-cloth may be used in its fine or coarse meshed clothis selected, according to thenature of the precipitate; it ismoistened before the nitration If this is also attacked, nitrocellulose cloth may be used ; it ismade by treating a cloth woven from plant fibres with a mixture of
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