• Brewco Calcium Chloride Flakes 100g – main product photo
  • Brewco Calcium Chloride Flakes 100g key facts: contains 100g calcium chloride flakes, 5g per 100L adds 13.6ppm calcium, about 1.15g per 23L for same rise
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Brewco Calcium Chloride Flakes 100g

Brewco Calcium Chloride Flakes 100g

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Brewco Calcium Chloride Flakes are a brewing water salt for adding calcium and chloride to your mash or brewing liquor. Chloride brings out malt fullness and roundness, making it a good fit for malty bitters, stouts and hazy, soft-bodied pale ales.

What it does

  • Raises calcium, which helps mash pH, yeast health and beer clarity
  • Raises chloride, giving a fuller, smoother, more malt-led beer
  • Balances against sulphate from gypsum, which pushes beer towards a drier, crisper bitterness

Specs

  • Contents: calcium chloride flakes, 100g
  • Use in: all-grain and extract brewing water

How to use

Add small amounts to your brewing water before the mash - see the How to Use box. Test your water first with Water Hardness Test Strips so you know your starting point.

Who it's for

All-grain brewers who want to tune their water to the beer style. Pair it with Calcium Sulphate (Gypsum) to set your chloride-to-sulphate balance, and keep the flakes sealed - calcium chloride readily absorbs moisture from the air.

Calcium Chloride
How to Use
Dose
From water report
5g/100L = +13.6ppm Ca
About
1.15g per 23L
for the same rise
When
Before mashing

Used for: Adds calcium and chloride to brewing water for a fuller, softer, maltier beer and a lower mash pH.

When: Before mashing - into the grist or mash liquor.

Step by step
1Work out your dose from your water report (5g per 100 litres adds 13.6ppm calcium and 24.1ppm chloride).
2Weigh the flakes.
3Stir into the grist or mash liquor. For big doses, split two-thirds mash / one-third sparge.
4Don't add to the hot liquor tank.
Good to know: The flakes absorb moisture from the air - keep the pot sealed. Avoid contact with eyes.
You may also need: All treatments & water salts
Frequently Asked Questions
What does calcium chloride do in beer?

It adds calcium (good for the mash and yeast) and chloride, which gives a fuller, softer, maltier taste.

How much should I add?

Work it out from your water report. As a guide, 5g per 100 litres adds 13.6ppm calcium and 24.1ppm chloride - about 1.15g per 23 litres for the same rise.

When do I add it?

Before mashing, into the grist or mash liquor - not the hot liquor tank.

Calcium chloride or gypsum?

Chloride rounds out malty beers; sulphate (gypsum) sharpens hoppy, bitter beers. Many brewers use a little of both.