Chloramine removal with potassium metabisulphate

Discussion in 'Beginners Brewing Forum' started by mechamaniaboy, May 19, 2018.

  1. mechamaniaboy

    mechamaniaboy New Member

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    Please can anyone answer the following questions for me? How many grams of potassium metabisulphate powder (not tablets) should I add to 43L of liquor and when should I add it i.e the day before, during the mash, during the boil?
    Your advice will be gratefully received:)
     
  2. Chris in Spain

    Chris in Spain New Member

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    Ive read a lot of stuff about this and you need to know the concentration of chloramine in your water in order to use the correct dose so you have to test it or get the information from your water supplier, or use bottled water
     
  3. mechamaniaboy

    mechamaniaboy New Member

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    Hi Chris, thanks for your reply. I did think about that. Do you suppose they'll give me the dosage in ppm?
     
  4. Chris in Spain

    Chris in Spain New Member

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    Hi , Don't know but you could ask them for mg per litre and see what they say.
     
  5. The Brew Mentor

    The Brew Mentor Well-Known Member

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    A generally accepted rate would be 1 Camden tablet per 20 gallons.
    That would be about .5 grams
     
  6. mechamaniaboy

    mechamaniaboy New Member

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    Thanks for your advice gents
     
  7. BOB357

    BOB357 Well-Known Member

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    FYI, mg/liter and ppm are the same.
     
  8. Hawkbox

    Hawkbox Well-Known Member

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    That's cause us Metric folk do things that makes sense, no rods to the hogheads! ;)

    For 43L anywhere between .5 and 1 gram should be perfectly adequate. That works out to about 12 gallons and I normally put a half tablet in per 5 gallon pail of water since it's hard to split the tablets smaller than that.
     
  9. Ozarks Mountain Brew

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    you can add 500mg potassium metabisulphite to 20 gallons water or 1 tablet and its fine, remember its an instantaneous process, it will not protect after the initial reation
     
  10. mechamaniaboy

    mechamaniaboy New Member

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    Sage advice Gents, thanks to all!
     
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