#storage-coldchain 2025-08-03

i freeze aliquots and have had them test fine afterwards. others here would not do it and i understand why

log it

Inter-lab diff for lot C-4402: 98.1% vs 99%. Within expected range.

slightly off topic but i left it out overnight by accident, bin it or use it

buy a thermometer

lyophilised powder is genuinely robust. a warm transit is far less likely to matter than people fear

light exposure matters much less than temperature for these. i still keep them in the carton

do i need to worry about light exposure or is that overthinking

right so hotel minibars are frequently not cold enough. i take a thermometer, which is ridiculous and also correct

if you are worried after a bad transit, test it. that is what the testing channels are for

lyophilised at room temp for 7 days in transit, worried or not

two to eight degrees. most domestic fridge doors are not in that range and people do not check

does the amber vial thing matter or is it marketing