conversion factor to convert the volume of the liquid to weight. The formula for a

weight/volume calculation is:

AXSXD

Q = --------------, where D = Density of the diluent .

C

If the dilutent is water, the density is 8.34 pounds per gallon. If a diluent

other than water is used, the density of that particular diluent should be

determined for most accurate results. A few common diluents and their

densities are the following:

(1) Acetone (6.5 lb/gal).

(2) Fuel oil No. 2 (7 lb/gal).

(3) Kerosene (6.4 to 6.6 lb/gal).

b. ** Calculation. **The following sample problem will illustrate the use of the

formula for mixing solid (powder) concentrates with liquid diluents.

(1) Problem. 5 gallons of 2% carbaryl suspension are to be prepared

using carbaryl 80% wettable powder and water. How many pounds of concentrate are

required?

(2) Figure 2-4 illustrates the problem graphically.

(3) Computation.

AXSXD

5 gal X .02 X 8.34 lb/gal

Q = ------------ = -------------------------- = 1.04 pounds

C

0.80

concentrate

This amount (1 pound) of concentrate is placed in a 5-gallon container and

enough water is added to fill the container (total mixture = 5 gallons).

MD0173

2-10

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