QUANTITY TO BE PREPARED
%W/V 5 ml
10 ml
15 ml
30 ml
60 ml
120 ml
180 ml
240 ml
1/4 %
0.0125
0.025
0.0375
0.075
0.15
0.3
0.45
0.6
%
0.025
0.05
0.075
0.15
0.3
0.6
0.9
1.2
1 % 0.05
0.1
0.15
0.3
0.6
1.2
1.8
2.4
2 % 0.1
0.2
0.3
0.6
1.2
2.4
3.6
4.8
3 % 0.15
0.3
0.45
0.9
1.8
3.6
5.4
7.2
4 % 0.2
0.4
0.6
1.2
2.4
4.8
7.2
9.6
5 % 0.25
0.5
0.75
1.5
3.0
6.0
9.0
12.0
10 %
0.5
1.0
1.5
3.0
6.0
12.0
18.0
24.0
15 %
0.75
1.5
2.25
4.5
9.0
18.0
27.0
36.0
20 %
1.0
2.0
3.0
6.0
12.0
24.0
36.0
48.0
25 %
1.25
2.5
3.75
7.5
5.0
30.0
45.0
60.0
50 %
2.5
5.0
7.5
15.0
30.0
60.0
90.0
120.0
NOTE: The table above may be used to find the weight of solute in GRAMS required to
prepare the indicated volume of solution with the desired percentage strength.
Table 1-11. Percentage solutions (w/v) in the metric system.
1-18. FIELD DILUTION OF ISOPROPYL ALCOHOL
Isopropyl alcohol is widely used in a 70 percent concentration as an antiseptic-
disinfectant. Since its effective range of activity is 70 percent to 90 percent, great
accuracy is not required in the dilution of stock 99 percent isopropyl alcohol. The field
method is to:
a. Fill container (pt, qt, or gal) approximately three-fourths full with 99 percent
isopropyl alcohol.
b. Using distilled water, finish filling container to mark. The finished product is
70 percent to 75 percent isopropyl alcohol, which is suitable for field use.
MD0913
1-18