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

the data logger question that gets asked weekly, answered properly

Discussionbranch of 8 comments

the data logger question that gets asked weekly, answered properly — a position I have arrived at slowly and would like tested. A transit temperature logger records a distribution, and time above a threshold matters as much as peak temperature. That is the argument for logging rather than guessing. Put a logger in…

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8 comments, started 1 year ago
u/anya_rautio524 points·1 year ago

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 ice interface.

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u/asks_dumb_questions184 points·1 year ago

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

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u/coa_collectorarchivist171 points·1 year ago·edited

Push back: you cannot infer degradation from a temperature excursion alone. That is what testing is for.

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u/fatima_yildizOP757 points·1 year ago

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/sterile_field_steph1.1k points·1 year ago

if you want to know, log it, otherwise you are guessing

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u/sunday_shot_sal573 points·1 year ago

ask which lines are held in regional stock before you order in July

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u/nils_ferreira627 points·1 year ago

transit temperature is a distribution, not a number

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u/search_before_post208 points·1 year ago

transit temperature is a distribution, not a number

Adding the practical version: ask which lines are held regionally before you order in July.

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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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