This quick reference sheet cuts out the math when cleanings kettles, fermenters and kegs.
Corny Kegs and Carboys / Demijohns

Assumptions:
- Kegs, carboys and fermenters are 19 litres or 5 gallons
- Kettles are 57 litres or 15 gallons
- Imperial measurements are in the U.S.A. standard
PBW
- Metric: 319 grams
- Imperial: 11-1/4 ounces
Sodium Percarbonate
- Metric: 95 grams
- Imperial: 3-3/4 ounces
StarSan
- Metric: 30 millilitres
- Imperial: 1 fluid ounce
Kettles

PBW
- Metric: 425 – 830 grams for a 57 litre kettle
- Imperial: 15 – 30 ounces for a 15 gallon kettle
Sodium Percarbonate
- Metric: 570 grams
- Imperial: 15 – 30 ounces