The concentration of PBW depends on the soil load to be cleaned.
To CIP Brew Kettles and Lauter Tuns - Use 1 to 2 oz per gallon of water for single brew cleaning. For multiple brew cleaning use 1.5 oz per gallon of water. Run solution for 25 to 35 minutes, at temperatures between 100° and 160°F. Rinse with potable water immediately after CIP at same temperature as the wash temperature.
For Fermentors, Conditioning & Aging Tanks and Kegs - Use 3/4 oz per gallon of water for 25 to 30 minutes with warm to hot water. Rinse immediately after with same temperature water.