. A treatise on pharmacy for students and pharmacists. Graduated glass receiving 130 GENERAL PHARMACY. The usual method of supporting percolators is by means of the ironrings of a retort-stand, as already shown in Fig. 104 ; in order to pro-tect the glass, sections of rubber tubing may be attached to the rings,forming: suitable cushions or guards. A verv convenient arrangementis Becks Percolating Stand (see Fig. 108), which admits of simulta-neous multiple operations and is equally well adapted for use in thestore or laboratory. The stand can either be placed on the floor orbe s
. A treatise on pharmacy for students and pharmacists. Graduated glass receiving 130 GENERAL PHARMACY. The usual method of supporting percolators is by means of the ironrings of a retort-stand, as already shown in Fig. 104 ; in order to pro-tect the glass, sections of rubber tubing may be attached to the rings,forming: suitable cushions or guards. A verv convenient arrangementis Becks Percolating Stand (see Fig. 108), which admits of simulta-neous multiple operations and is equally well adapted for use in thestore or laboratory. The stand can either be placed on the floor orbe supported on two iron brackets fastened to the wall; as shown in Fig. Becks percolating stand. the illustration, it can be changed by means of thumb-screws to suitvarious heights of bottles. The length of the base-board is 42inches, the width 12 inches, and the extreme height of the stand36 inches ; the supports for percolators and funnels are formed bymeans of cross-pieces suitably hollowed out and secured by screwspassing through the slot in the cross-bars. Re percolation is a process intended for the preparation of con-centrated vegetable solutions with a minimum quantity of menstruum,and is confined to the manufacture of fluid extracts without Squibb, who is the author of the processs, defines it to be thesuccessive application of the same percolating menstruum to fresh PERCOLATION. 131 portions of the substance to be percolated/ His suggestion wasbased upon the observation made that a weak solution of the con-stituents of a drug is a better solvent for the soluble active principlesof that drug than fresh menstruum. The following example wi
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Keywords: ., bookcentury1800, bookdecade189, booksubjectpharmacy, bookyear1895
