Basically I use it for everything BP related (lift, break, ...)
I try to use the same milling times & the same process over and over which also helps make it consistent.
But it's a fact the chem quality is important.
A few years back I bought two 25kg KNO3 bags so I know the quality is always the same.
If I run out and restock it from another supplier I will test it first as quality can differ (much) between different suppliers (especially if you buy it from online suppliers).
But again, I'm still using the stuff from my local supplier so I can't compare the quality between online suppliers.
Edited by PyroCreationZ, 02 July 2011 - 09:15 AM.