I've got my oxalic acid.........

Could any kind soul please tell me the right quantities to mix?

thanks

Keep adding oxalic acid crystals to hot water until no more will desolve. You have now got a saturated solution. If you want a gel so that it says put on vertical surfaces add wallpaper paste granules till you have the right consistency. PS I always use oxalic acid as a concentrated solution.

1 ounce to one pint of warm water Jay Jay

Thanks to you both - I am looking forward to a gleaming white boat.

1 handfull to 1 bucket,also ad a small amount of washing up liquid.this helps it to stick to the hull.leave on hull for about 10 mins then rinse.

Where did you buy it from, please? And what price should I expect to pay. Thanks

Can you use this stuff on GRP?.

Works great on GRP. I also use it to clean stainless steel

Thanks Frank. I will try it on severe rust stains on my deck next week. Rab.

From a local chemist (he had to order it). He charged £6 for a kilo.

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