To Determine

Divide dilution into cost per gallon

Examples:

1. 1: 256 dilution selling at
   $12.30 per gallon:
   $12.30 / 257 = .048 or
   4.8¢ per gallon
2. 1:10 dilution selling at $4.00
   per gallon: $4.00 / 11 = .36
   per dilute gal.

Divide dilution ratio into 128

Examples:

1. 1:85 dilution
   128 / 85 = 1.5
   Answer = 1.5 ounces per gal.

Divide ounces per gallon into 128

Example:

1. 1 1/2 oz, per gallon dilution
   128 / 1.5 = 85
   answer = 1:85 dilution ratio

Note:
It is necessary to first convert
dilution to ounces for one gallon.

Example: Dilution is 10 ounces
per 5 gallons. Divide 10 by 5
(10/5 = 2) Answer: two ounces
per gallon. Now divide the ounces
per gallon into 128 (128 / 2 = 64).
Answer: use dilution is 1:64.

Multiply percentage of active
disinfectant times 10,000, and divide
by use - dilution rate

% active x 10,000
dilution rate

Examples:

Given active percentage if 4.5%.

1. At 1:256 (1/2 oz. per gallon)
   (4.5 x 10,000) / 256 = 176
   ppm active
2. At 1:128 (1 oz. per gallon)
   (4.5 x 10,000) / 128 = 352
   ppm active

U.S. Volume Equivalents

One Gallon
4 quarts
8 pints
16 cups
128 ounces

One Cup
8 ounces

 

One Tablespoon
3 teaspoons

One Pint
2 cups
16 ounces

One Ounce
2 tablespoons
6 teaspoons

 

One Quart
2 pints
4 cups
32 ounces

Metric Volume Equivalents

3 teaspoons =
8 tablespoons =
16 tablespoons =
1 fluid ounce =
8 fluid ounces =
16 fluid ounces =
32 fluid ounces =
128 fluid ounces =

1 tablespoon
1/2 cup
1 cup
2 tablespoons
1 cup
2 cups or 1 pint
4 cups or 1 quart
1 gallon

Temperature Conversions

°F = 9/5 (°C) + 32
°C = 5/9 (°F-32)