Be very careful about how you store the potassium permanganate. It reacts with a lot of different chemicals & its environmentally hazardous. One or two of them are somewhat more vigorous than glycol.
http://www.reagent.co.uk/uploads/msds/POTASSIUM%20PERMANGANATE%205%20percent%20W%20V.pdf
_________________________
I don't do dumb & helpless.