I tried the water treatment calc with the example given on the Brupaks page but the figures for CRS come out quite different.

http://brupaks.com/water%20treatment.htm
Example given...

CaC03 is 195 p.p.m

target range of 30-50 p.p.m

to reduce the alkalinity by 160 p.p.m. CRS should be added at a rate of 0.87ml

So for 30 litres of liquor, 30 x 0.87 =

**26ml** of CRS.

Put these same figures in the water treatment calc and I get

**49.3ml** CRS?