Calcium Chloride flakes

Calcium Chloride flakes - 100 g Sachet

Great for correcting mineral deficiencies in your brewing water.

Lowers PH levels in mashing and adds hardness to your brewing water. .

Dosage: Use up to one teaspoon per 23 Liters of water before the boil.

See handy water chemistry calculator

http://www.brewersfriend.com/water-chemistry/