I'm new to Potassium-Perm. I found it here in the drugstore in these nifty foil sheet 10-packs. Each blister in the foil pack holds enough to make 1 liter of strong purple solution.
How do you measure such a tiny ammount for water purification? I tried useing the point of my SAK blade and I got too much, the solution looked too strong. How much is enough? Mac