. A treatise on pharmacy for students and pharmacists. Simple mould for compressed tablets. Fig. The Smedley pill-compressor. The greater the pressure applied, the firmer will be the compres-sion, but, at the same time, the slower will be the disintegration ofsome compressed tablets; hence only sufficient pressure should beused to cause the particles to cohere properly without crumblingwhen handled or breaking if allowed to fall. COMPRESSED TABLETS AND TABLET TRITURATES. 347 Some substances show a disposition to stick in the mould, and arethen removed with difficulty. This tendency can b
. A treatise on pharmacy for students and pharmacists. Simple mould for compressed tablets. Fig. The Smedley pill-compressor. The greater the pressure applied, the firmer will be the compres-sion, but, at the same time, the slower will be the disintegration ofsome compressed tablets; hence only sufficient pressure should beused to cause the particles to cohere properly without crumblingwhen handled or breaking if allowed to fall. COMPRESSED TABLETS AND TABLET TRITURATES. 347 Some substances show a disposition to stick in the mould, and arethen removed with difficulty. This tendency can be overcome by theaddition of a small quantity of purified talcum and a few drops ofliquid petrolatum, which latter may be applied by spraying a solu-tion of it in ether on the granules. By thus lubricating the surfacesof the mould the tablet is readily discharged. In a few cases plainwater has been found very serviceable, provided no solvent effect isproduced on the substance to be compressed, as, for instance, withphenacetin, salol, naphthalene, etc. If, at any time, a compressedtablet should bec
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Keywords: ., bookcentury1800, bookdecade189, booksubjectpharmacy, bookyear1895
