Aqueous solution containing by weight: <br><br><br>- 30 % or more but not more than 40 % of poly-4-vinylpyridine-N-oxide, <br> <br><br><br>- 0,1 % or more but not more than 4 % of isonicotinic acid-N-oxide, <br> <br><br><br>- 0,1 % or more but not more than 3,5 % of sodium sulphate, <br> <br><br><br>- 0,1 % or more but not more than 2 % of 4-acetylpyridine-N-oxide
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condition:B,certificate:9104,action:25|condition:B,certificate:9Y07,action:25|condition:B,action:05