i read somewhere that you can check the efficiency of your sparge by doing an iodine test on the back of a white plate.
when i went into a health food shop today for some jumbo oat flakes for my forthcoming attempt at hoegaarden (advised by a nice lady from hop and grape), I also asked for some iodine solution.
The assistant said that it was dangerous stuff and as far as she was aware health foods shops stopped stocking stuff like that a long time ago.
i'm confused and/or stupid
iodine solution
The same brew shop may well have the little bottles of 'Iodine Solution' 'Starch test Solution' etc, like little eye drop bottles with a dropper built in the lid. When mine ran out, I just refilled with iodine solution because the dropper is so handy.
Bollocks to the chemist, go to the homebrew shop
Bollocks to the chemist, go to the homebrew shop

The iodine test is to take a teaspoon of your mash, place it on a clean white saucer and put a couple of drops of iodine onto it. If it turns blue you haven't achieved conversion - if it stays a darkish brown then conversion is complete.
Think I've got that right.
Didn't know it could be used as a sanitiser though.
Think I've got that right.
Didn't know it could be used as a sanitiser though.