Journal

What a thermoelectric cooler can and cannot do
A plain explanation of how a small battery cooler reaches 36 to 46 F, why the room temperature matters, and when a gel pack is the better answer. Read more...
3 ml vs 10 ml vials: sizes, caps and what fits where
The two common vial sizes, their real dimensions, and why a case that holds thirty of one may hold none of the other. Read more...
How to organize vials in the fridge (and why the door is the wrong shelf)
Upright, dark, labelled, off the door. The four rules of a vial shelf that stays in order, and what to use for each. Read more...