A guideĀ to treating liquor (brewing water) using Brupaks Carbonate Reducing Solution (CRS) and Dry Liquor Salts (DLS) is available as Factsheet No 1. The process described is a lot cheaper and quicker than the pantomime of boiling with gypsum, cooling, decanting and heating again described in old (and some new!) home brewing books. This spreadsheet created by member Nigel Porter simplified the calculations.