Dilution Charts and Conversion Tables

Dilution Chart

Dilution RatioOunces Per GallonPercent
1:112850%
1:26433%
1:43220%
1:621.314.3%
1:81611.1%
1:1012.89.1%
1:1210.77.7%
1:1685.8%
1:206.44.8%
1:245.34.0%
1:3243.0%
1:403.22.4%
1:502.52.0%
1:6421.5%
1:801.61.2%
1:961.31.0%
1:12810.78%
1:1700.750.58%
1:2560.500.39%
1:5120.250.19%

Conversion Tables

Diluted Cost Per Gallon

Divide dilution into cost per gallon.

Example: (1:128 dilution selling at $13.40 per gallon)
$13.40 ÷ 129 = .1038 -or- 10.4¢ per diluted gallon

Dilution Ratio

Divide ounces per gallon into 128.

Example: 
(4 ounces per gallon dilution)
128 ÷ 4 = 32

Answer:
1:32 ratio

Ounces Per Gallon

​Divide dilution ratio into 128.

Example:
(1:32 dilution)
128 ÷ 32 = 4

Answer:
4 ounces per gallon

Temperature Conversion

°C = 5/9 x (°F – 32)

Example:
70°F = 5/9 x 70 – 32 = 21°C

°F = 9/5 x (°C) + 32

Example:
25°C = 9/5 x 25 + 32 = 77°F

Metric Volume Equivalents

1 fluid ounce = 30 milliliters

8 ounces (1 cup) = 237 milliliters

16 ounces (1 pint) = 473 milliliters32 ounces (1 quart) =946 milliliters

64 ounces (½ gallon) = 1892 milliliters -or- 1.9 liters

128 ounces (1 gallon) = 3785 milliliters -or- 3.8 liters

Hard Water Measurements

Hard water contains ions of magnesium and calcium.
1 grain hard water = 18 ppm hard water

Example:
450 PPM hard water = 25 grain
(450 ÷ 18 = 25)

Active Parts Per Million

Commonly used for disinfectants.
Step 1: Add together active ingredients on label.
Step 2: Multiply by 10,000.
Step 3: Divide the result of Step 2 by the dilution rate.

Example:
Using Quat 44-HBV (#2318) (1:64 dilution)
1. 2.25% + 2.25% = 4.5% active
2. 10,000 x 4.5 = 45,000
3. 45,000 ÷ 65 = 692 PPM Active Quat