With solutions try to reduce the quantity to save money
To save weight and money a precipitation of the manganese compouns may be meaningful. On adding hydrogen peroxide to an aqueous solution of manganese compounds all of them are uniformly transformed to manganese dioxide. (Be careful! With permanganate the solution must be very diluted. Otherwise the rection may be explosively.)
The precipitated manganese dioxide is filtered off and dryed. Check the filtrate if the manganese is completely removed.