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oxygen saturation in water butts
On 2015-07-06, Chris Hogg wrote:
I note that 35% H2O2 isn't available in the UK and more. Apparently it's illegal to sell it. Maximum strength allowed these days is 12%. So that would be 7.5ml of 12% in 10 litres. Last time I bought some, the pharmacist told me they were *only* allowed to sell 12% now --- i.e., you can't get 6% so you have to dilute the stuff they sell in order to use it as a topical antiseptic. Strange. |
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