if you can find the right supplier. you wil either get it in large large amounts or rather smal ones.. swibb is currently waiting on the arrival of 2.5 kilos on the premise of using it as a descalant. it is used OTC as a fertilizer and as a descalant, a descalant btw removes hard water stains and calcium deposits
finding a non-industrial supplier for it can be time concuming but pretty easy.