The Selection instructions say: " if you want to age more than 6 months add 1.5 gm (1/4 tsp) potassium metabisulphite" (to a 30 bottle kit). Wikipedia (sorry) says potassium metabisulphite and sodium metabisulphite are pretty interchangeable. My Richies campden tablet powder (sodium metabisulphite) says one teaspoon is the equivalent of 1 campden tablet and so you need 5 for a 30 bottle kit.
So I have a couple of questions for you, I'm sorry if they are a bit basic and you think 'oh that one again', but typing sulphite into the search engine kicked up 20 pages of references...
For my present stock of campden powder (Richies) should I dose a 30 bottle kit with 5tsp or 1/4tsp to protect it for more than 6 month in the bottle?
If I'm going to do this fairly regularly, is there a better supply of potassium metabisulphite... Campden powder looks pretty outrageously extravagant if 1/4tsp = 5tsp (do they cut it with chalk or something?)
My friendly LHBS says potassium is a US tradition, whereas UK run with sodium, if you've got the patience to explain maybe you could suggest what the difference is and why one might be preferable?
Your help will be really useful and your patience in finding the time to answer very much appreciated.
So I have a couple of questions for you, I'm sorry if they are a bit basic and you think 'oh that one again', but typing sulphite into the search engine kicked up 20 pages of references...
For my present stock of campden powder (Richies) should I dose a 30 bottle kit with 5tsp or 1/4tsp to protect it for more than 6 month in the bottle?
If I'm going to do this fairly regularly, is there a better supply of potassium metabisulphite... Campden powder looks pretty outrageously extravagant if 1/4tsp = 5tsp (do they cut it with chalk or something?)
My friendly LHBS says potassium is a US tradition, whereas UK run with sodium, if you've got the patience to explain maybe you could suggest what the difference is and why one might be preferable?
Your help will be really useful and your patience in finding the time to answer very much appreciated.
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