## How to Calculate Dry Ingredients for a Footbath

#### B. C. Allison

Use the steps outlined below to determine how much dry product, such as copper sulfate, to add to your footbath for the proper solution.

1. Determine capacity of footbath in gallons. For this example, the footbath will be 2 feet wide, 6 feet long and have a water depth of 4 inches.

Formula:

Length x width x depth x 7.46 (conversion factor to gallons).

2 feet x 6 feet x 0.3 feet x 7.46 = 26.85 gallons of water

2. When adding dry materials to a footbath, the gallons must be converted to pounds.

Formula:

Gallons x 8.33 (conversion factor) = pounds.

26.85 x 8.33 = 223.66 pounds of water

3. Next, determine the pounds of dry material to add to reach the desired percent solution.

Formula:

Pounds of water x percent solution desired = pounds of dry product to add.

223.66 pounds of water x 0.05 (5 percent solution) =

11.18 pounds of dry material to add

Source:

DAIRY HERD MANAGEMENT, November, 1995

Department of Animal Science, North Carolina State University
Published by North Carolina Cooperative Extension Service, North Carolina State University, Raleigh, North Carolina
Distributed in furtherance of the Acts of Congress of May 8 and June 30, 1914. Employment and program opportunities are offered to all people regardless of race, color, national origin, sex, age, or disability. North Carolina State University, North Carolina A&T State University, U.S. Department of Agriculture, and local governments cooperating.