I keep the powder in the freezer. Decent bacteriostatic water still lets me refrigerate the prepared vial for about three months.
I'm wondering whether most folks go for two or three milliliters when mixing these. Some T30s are on order and I'm trying to settle on an amount. Never used anything similar before so this will be a first. Smaller strengths weren't available at the place I chose so thirty ended up being the minimum. Thinking a cautious start at one milligram makes sense. With such a tiny initial amount would splitting it into two or three injector cartridges and keeping the extras frozen work better or should everything go into just one since it won't get used weekly?