Alkalinity - Why you should always test before brewing

(That's water to the rest of us!) Beer is about 95% water, so if you want to discuss water treatment, filtering etc this is the place to do it!
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Aleman
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Alkalinity - Why you should always test before brewing

Post by Aleman » Fri Jun 11, 2010 6:26 pm

I've been amazed today, I'm drawing off the liquor to brew this weekend, and as I usually do I took a small sample to test for alkalinity . . . You should know that for the last 2 years I've done this and my running average is 26mg/l as carbonate.. . . . Well according to the Salifert kit My reading today was 143 mg/l . . . .I don't beleeeeiiiiiiiivvvvvvvveeeeeee it! . ... Well actually I didn't . . . So I grabbed my trusty pH meter and a bottle of CRS test solution . . . and it took 7.13ml of CRS test solution to reach the end point (pH 4.3) . . .7.13 * 18.3 is 130mg/l.

It has been stable a couple of ppm either side of 25 for the last two years, and now its changed . . . Bloomin United Utilities . . . so for the first time I am going to be using a bottle of CRS I bought 2 years ago . . . a whopping 66ml of it.

Going to check the Calcium level too, but that has changed . . . not that it will be too drastic if it has.

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Re: Alkalinity - Why you should always test before brewing

Post by Jim » Fri Jun 11, 2010 6:49 pm

Just goes to show you can't take anything for granted! :shock:

Do you reckon they've rerouted your supply to a different source?
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Re: Alkalinity - Why you should always test before brewing

Post by Aleman » Fri Jun 11, 2010 7:01 pm

Have to have done Jim, Can't believe that Haweswater has changed that much

The Calcium Level confirms it, as it's around 70mg/l

Glad I checked it really as I forgot on Tuesday and I'm making a much bigger batch this weekend . . . Did wonder why the boiling water I filled the Yeast rehydration flask with was milky . . . . Duh!

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Re: Alkalinity - Why you should always test before brewing

Post by bellebouche » Fri Jun 11, 2010 7:52 pm

That's fascinating. I wonder what kind of response if you'd get from your water supplier if if put the challenge to them about what was underpinning the change.

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Re: Alkalinity - Why you should always test before brewing

Post by Aleman » Wed Jun 23, 2010 1:26 pm

bellebouche wrote:I wonder what kind of response if you'd get from your water supplier if if put the challenge to them about what was underpinning the change.
Just spoken to the nice bods at United Utilities, they have increased their borehole usage for our area to help them maintain the water levels in the upland reservoirs . . . . It was this that has led to an increase in the water hardness and alkalinity, unfortunately while this period of low rain continues the water will still be drawn from boreholes.

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Re: Alkalinity - Why you should always test before brewing

Post by Manx Guy » Wed Jun 23, 2010 2:38 pm

WOW!

Thats some change....

What would have been the outcome do you think had you NOT checked your Alkalinity?
:)
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Re: Alkalinity - Why you should always test before brewing

Post by jubby » Wed Jun 23, 2010 7:09 pm

Worth knocking out a decent porter before they change it back! :D
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Re: Alkalinity - Why you should always test before brewing

Post by steve_flack » Wed Jun 23, 2010 8:22 pm

You've now got Southern Water. Enjoy :roll:


Manx Guy

Re: Alkalinity - Why you should always test before brewing

Post by Manx Guy » Thu Jun 24, 2010 11:03 am

What makes 'southern water' so great...?

Is it the fact its been through at least 7 pairs of kidneys before you get to drink it/brew with it?
:lol:

So there is some benefit from getting your water from the 'chalky downs'...?

Rather than the limestone hills of the north.... ?

:D

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Re: Alkalinity - Why you should always test before brewing

Post by boingy » Thu Jun 24, 2010 11:15 am

Do you think the hosepipe ban will include those folk who's houses were underwater last November?

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Re: Alkalinity - Why you should always test before brewing

Post by Aleman » Thu Jun 24, 2010 11:50 am

Manx Guy wrote:What would have been the outcome do you think had you NOT checked your Alkalinity?
As I was brewing a pale North German Pilsner the mash pH would have settled somewhat higher than the 5.33 I achieved . . . Guessing at around 5.7 to 5.8 from previous experience. I still think the beer would have been more than acceptable anyway :D
steve_flack wrote:You've now got Southern Water. Enjoy :roll:
Chris-x1 wrote:it's easier to take out alkalinity than it is to put it add it. Give me southern water over that northern crap any day...mine's got plenty of calcium too.
Cheers guys :evil: Southern water is not all that bad, and like Chris I would prefer water that had a bit more 'guts' to it, as it is easier to deal with that trying to increase alkalinity for dark beers . . . . Might do some stouts/porters now for winter though :) Couldn't get them to provide an analysis for the big six ions (calcium, magnesium, sodium, sulphate, chloride and alkalinity ) for this water source though :twisted:
Chris-x1 wrote:With water companies loosing up to a third of the water they supply due to underground leaks I suggest they get their own house in order before they dictate how people choose to use the water they pay for.
Exactly my thoughts Chris . . . Keep on brewing brothers!

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