bstance is added to a liquid if the percentage is not over i1,,, the customis to take 100 cc. of the liquid and add to it the number of grams indicated bythe per cent. That is for a 5,, solution one would take ico cc. of the liquidand 5 grams of the dry substance. This does not make a strictly 5,,… … Figs. 218-219. Scales for weighing chemicals. (Cuts loaned Lomb (Optical Compan \ 376. Solutions of 10 per cent and more.—When the percentag 27o PREPARATION OF REAGENTS [CH.IX over it is better to weigh out the number of grains representing the percentageand add to it the right amount of liquid in…
Microscopy
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