[Discussion] data logger is doing more work than we give it credit for
data logger is doing more work than we give it credit for. It is the sort of thing everyone half-believes and nobody writes down. Once in solution, the relevant risks are hydrolysis, aggregation and, for some sequences, oxidation. Refrigeration slows all three; freezing a solution introduces a separate risk at the…
On loggers, since I was sceptical and then bought one.
A small transit logger costs a fraction of a vial and records the whole journey rather than the moment of arrival. What I learned from three of them: my lane is far more stable than I assumed, the one excursion I did capture was on a weekend, and the arrival-temperature guessing I had been doing was worthless.
If you are going to argue about cold chain, argue from a chart. It is a one-off purchase and it ends the speculation permanently.
light matters more than people think for some of these
a warm gel pack tells you the pack failed, not that the material did
ask which lines are held in regional stock before you order in July
Is this a line they hold in regional stock or is it shipping from origin?
What was the packaging — rigid outer, gel packs, anything insulating?
Right, and asking what the stability statement was written against is one line of email that reframes everything.