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c/coldchain·submitted 10 months ago by u/anya_salgado

three years of data logger threads, summarised so you do not have to read them

Databranch of 6 comments

Trying to settle this properly because the thread from last year went in circles. The claim: data logger matters. The counter-claim: it is measurement error. Both sides have been asserting it confidently for about 14 months without either producing anything. What would actually settle it is 23 people measuring the…

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6 comments, started 10 months ago
u/plain_titration_202467 points·10 months ago·edited
wrong community but useful, so, shrug
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u/ilias_steiner53 points·10 months ago

Reconstituted or dry powder?

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u/anya_salgadoOP34 points·10 months ago

Logger trace from my shipment: 7 hours at 29°C. Powder tested 97.2% against 97.9% claim. Tolerates more than the box implies.

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u/coldchain_karencold chain40 points·10 months ago

This is correct. Dry powder is way more robust than liquid.

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u/rohan_steiner20 points·10 months ago

gel packs last 16 hours, after that you are relying on the box itself

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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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