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c/coldchain·submitted 1 year ago by u/sequence_checker

[Question] data logger — what am I missing here

Questionbranch of 9 comments

The title is the whole question — data logger — what am I missing here — but here is why I am asking. Lyophilisation removes the water that drives most degradation pathways. That is why the dry cake is comparatively robust and the reconstituted solution is not. Seasonality, which the source-page lane tables show…

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9 comments, started 1 year ago
u/zeynep_ndiaye72 points·1 year ago

Where in the fridge is it sitting now?

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u/anjali_tamm23 points·1 year ago

How many days in transit, and which month?

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u/anders_karlsen8 points·1 year ago

Right, and asking what the stability statement was written against is one line of email that reframes everything.

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u/usb_logger_ursula-6 points·1 year ago

light matters more than people think for some of these

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u/maren_sorensen1 point·1 year ago·edited

That is the ambient temperature at the destination, not the temperature inside the box. The logger measures the second one.

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u/sequence_checkerOPresearch peptides6 points·1 year ago

Right, and asking what the stability statement was written against is one line of email that reframes everything.

Disagreeing with this line only: freezing a reconstituted vial is not a safe default.

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u/noor_cardoso32 points·1 year ago

Put a logger in three consecutive orders. Two never went above the range at all and the third spent four hours warm on a Friday. Cost me almost nothing to stop wondering.

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u/brigade_detector22 points·1 year ago

Small fix — refrigerated, not frozen, once it is in solution.

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u/plain_titration_202429 points·1 year ago

ask what storage condition the stability statement was written against

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About c/coldchain

Temperature and stability in the real world: what an excursion actually costs you, why lyophilised powder is far more forgiving than reconstituted solution, how to read a logger CSV, and how to photograph a failed shipment so the conversation with the vendor is short.

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