Page 23 - My FlipBook

TABLES FOR PERCENTAGE SOLUTIONS. 1 21
of 4 per cent, cocaine muriate solution, run down the left-hand
column to 4, then along to the right till the column headed 4 fl.
oz. is reached. At the intersection of the two will be found
72912, and this is the number of grains needed. It must be re-
membered that this is the amount of water- to take, and not q. s.
water to make the volume, and also that these tables are true
only for water, and not for alcohol, or any other fluid. The
second table is similarly employed. If other amounts of a solu-
tion are required than those given in the tables, a simple mathe-
matical calculation will determine the amount of drug or salt re-
quired for a specified amount of solution. For example, if 8
fluid ounces of a four per cent, solution is required, follow down
the 4 fluid ounce column until opposite 4 per cent. ; the number
of grains required are 72912. Now, to make 8 fluid ounces,
just twice as much (145,824 grs.) is required. For all dispensing
and administering purposes in any prescribed doses, the figures
thus given are correct. It is therefore clear that if a drachm of
a 2 per cent, solution be prescribed, exactly 2 per cent, of that
drachm is the salt in the solution, the other 98 per cent, being
the water.

FOR MAKING ANY QUANTITY OF PERCENTAGE SOLUTIONS.
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To make Grains. Grains. Grains. Grains. Grains. Grains. Grains.
I per cent. . 4.557 9.114' 13.671' 18.228 22.785 45-57 72.912
2 per cent. 9. 114 18.228 27.342' 36.456 91.14 145.824
. 45-570
3 per cent. . 13.671 27.352! 41-013 54-684 68.355 1367 218.416
4 per cent. . 18.228 36.456 54.684 72.912 91.14 182.28 291.648
5 per cent. . 22.785 45-57 1 68.355 91.14 113-925 227.85 364-56
10 per cent. . 45-57 91.14 136.71 182.28 227.85 455-7 729.12
15 percent. . 68.355' 136-71 205.065 273.42 341.775 683-55 1093.68
20 per cent. . 91.14 1 182.28 273.42 364.56 45570 911.4 1458.24
25 per cent. . 113.925 227.85 341775. 45570 : 569-625 "39-25 1822.80
40 per cent. . 182.28 364.56 546.84 1729.12 911.4 1822.8 2916.48