treating with crs

While Beer is 90-97% water, it is a very tricky subject.

treating with crs

Postby mark1964 » Fri Jan 22, 2016 20:29

Just tested my water with a salifert kit for alkilinity got a reading of 0.32 on the syringe which converts to 3.76 meq/L ive times it by 50 which gives 188 ml crs added is that right? ive never added that much before

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Re: treating with crs

Postby mark1964 » Fri Jan 22, 2016 20:32

or is it 18.8ml of crs

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Re: treating with crs

Postby mark1964 » Fri Jan 22, 2016 20:40

Panic over damn calculator was wet

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Re: treating with crs

Postby legionuk » Fri Jan 22, 2016 20:42

How much alkalinity do you want to end up with?

Say its 30

188 - 30 = 158 caco3 to remove per litre

(158 / 180) x amount of brewing liquor in litres = the amount of crs to use.

It's best to use 3/4 of the amount of crs and then test again and recalculate how much more is required.

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Re: treating with crs

Postby legionuk » Fri Jan 22, 2016 20:44

My water is 230 caco3 when I use to treat with crs I would start by adding 10ml /15ml of crs and then do the test from that point.

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Re: treating with crs

Postby mark1964 » Fri Jan 22, 2016 21:00

thanks chaps its sorted now just not used to the alkilinity being this low

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Re: treating with crs

Postby Eric » Fri Jan 22, 2016 21:02

mark1964 wrote:Just tested my water with a salifert kit for alkilinity got a reading of 0.32 on the syringe which converts to 3.76 meq/L ive times it by 50 which gives 188 ml crs added is that right? ive never added that much before


Just for clarity, alkalinity measured in meq/l when multiplied by 50 gives alkalinity in mg/l as CaCO3.
As said, you then decide how much alkalinity you will retain to calculate the amount you wish to neutralise.
1 ml of CRS will neutralise 183mg of calcium carbonate, therefore multiplying the volume to be treated by the amount of alkalinity to eliminate divided by 183 estimates the amount in ml of CRS required.
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Re: treating with crs

Postby mark1964 » Fri Jan 22, 2016 21:06

added 16ml of crs tests ok now

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