This happened to me yesterday afternoon and this is what I came up with.
Cut the bottom and top off, opened a small "window" at the bottom to see if I was getting low and now there's no question as to what powder I have in the reservoir. Don't have to leave a bottle next to it to remind me.
Also, although I live in the PNW where Sun is a rare commodity, the black plastic bottle material does shield the powder from what little sun we have.
Works great with Hodgdon's family of powders, not so much with others that use square bottles
Now all i have to do is go find some empty 1# bottles for the powder(s) I buy in 8# jugs. This one was left from my recent test of CFE223. Tuesday my order will arrive with it in 8# jugs.

Cut the bottom and top off, opened a small "window" at the bottom to see if I was getting low and now there's no question as to what powder I have in the reservoir. Don't have to leave a bottle next to it to remind me.
Also, although I live in the PNW where Sun is a rare commodity, the black plastic bottle material does shield the powder from what little sun we have.
Works great with Hodgdon's family of powders, not so much with others that use square bottles

Now all i have to do is go find some empty 1# bottles for the powder(s) I buy in 8# jugs. This one was left from my recent test of CFE223. Tuesday my order will arrive with it in 8# jugs.