Magnesium Testing
Magnesium Testing
Severn Trent don't seem to give magnesium figures in their detailed water reports, so I dug out one of my old Salifert test kits but noticed that it is for testing marine water only. Has anybody had a go at 'marinising' their water (maybe by adding NaCl???) so that you can test it with one of these kits? And if you did would you get a sensible reading for mg?
- Eric
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Re: Magnesium Testing
Don't waste your time. Barley won't grow unless there is sufficient magnesium in the soil.
Magnesium is more soluble than calcium and finds its way into the finished beer in circumstances where calcium won't. Malt supplies many times more magnesium than it does calcium and makes any amount of it in water relatively insignificant.
Worry about magnesium only when there is little in your water supply or when brewing high gravity beers to support the yeast or when you desire its influence on flavour.
Magnesium is more soluble than calcium and finds its way into the finished beer in circumstances where calcium won't. Malt supplies many times more magnesium than it does calcium and makes any amount of it in water relatively insignificant.
Worry about magnesium only when there is little in your water supply or when brewing high gravity beers to support the yeast or when you desire its influence on flavour.
Without patience, life becomes difficult and the sooner it's finished, the better.
Re: Magnesium Testing
And that's why I asked the question........I'm brewing an Imperial Stout and, as per my original post, the Severn Trent water supply report does not list the mg content. I'm not asking about whether I should worry about mg levels in my brewing, I'm asking whether I can measure it using a marine testing kit.
Re: Magnesium Testing
I do not know which kit you are talking about but the magnesium content of sea water is much greater than in drinking water so the kit may be useless for low levels.
If you want to determine it you will need a total hardness testing kit (not the karbonate hardness one) and a calcium testing kit. Express both as calcium and multiply the difference by 0.6 to get magnesium. Doubt it will be better than =/- 100% of the real figure.
If you want to determine it you will need a total hardness testing kit (not the karbonate hardness one) and a calcium testing kit. Express both as calcium and multiply the difference by 0.6 to get magnesium. Doubt it will be better than =/- 100% of the real figure.
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Re: Magnesium Testing
you might be better off sending a sample of your water for a proper analysis
- orlando
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Re: Magnesium Testing
Haydnexport wrote:you might be better off sending a sample of your water for a proper analysis
....to WallyBrew.
I am "The Little Red Brooster"
Fermenting:
Conditioning:
Drinking: Southwold Again,
Up Next: John Barleycorn (Barley Wine)
Planning: Winter drinking Beer
Fermenting:
Conditioning:
Drinking: Southwold Again,
Up Next: John Barleycorn (Barley Wine)
Planning: Winter drinking Beer
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Re: Magnesium Testing
just email them and ask!
aamcle
aamcle
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Re: Magnesium Testing
Indeed , but i don't like naming people !orlando wrote:Haydnexport wrote:you might be better off sending a sample of your water for a proper analysis
....to WallyBrew.
- orlando
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Re: Magnesium Testing
It's not a secret.Haydnexport wrote:Indeed , but i don't like naming people !orlando wrote:Haydnexport wrote:you might be better off sending a sample of your water for a proper analysis
....to WallyBrew.
I am "The Little Red Brooster"
Fermenting:
Conditioning:
Drinking: Southwold Again,
Up Next: John Barleycorn (Barley Wine)
Planning: Winter drinking Beer
Fermenting:
Conditioning:
Drinking: Southwold Again,
Up Next: John Barleycorn (Barley Wine)
Planning: Winter drinking Beer
Re: Magnesium Testing
If it's just for a one-off brew, and you think it's that important, the cheapest solution is to buy some cheap bottled water from a supermarket. The label tells you the quantities of ions in it.