Yes , the percarbonate is in powder form in the plastic containers , extra protection from moisture i suppose .
These ingredients are the very common ones used in most of the carpet powders including all of the non detergent powders .
Mike , i dont think mixing ratios are critical as in your baking a cake analogy ... more like making a stew ... even if there is more of one ingredient than another it will still taste good . And i am confident they remain in solution once dissolved .
I will make slight mistakes ... like the xylene sulphonate is in tiny pellet form , so i will have to crush it to a powder with a morter and pestle so it dissolves quicker , but thats of little hassle.
Jeeze im not going to blow myself up with this lot
although if anyone sees me through the window weighing bags of powder they might suspect dissident republican activity or drugs cutting .
Price wise , i can make about 75kg powder with this lot ... so it works out at about the equivalent £23 incl vat and shipping for 10kg of the powder mixed
I will probably try my powder out on customers houses