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c/coldchain·posted 8 months ago by u/anders_karlsen

am I the only one who found ice pack harder than the injections

Question Long Haul ×7

Right, the packaging question again, but with numbers this time.

I have 9 data points over 6 weeks. The pattern is consistent enough that I do not think it is chance, and boring enough that nobody is going to screenshot it, which is usually a good sign.

The thing I would flag for anyone new: the effect I am describing showed up at week 60, not week 14. People give up long before the interesting part.

Interested in whether this matches other people's logs or whether I am an outlier.

916 up / 190 down83% upvoted19 commentsid qn6wl519 Nov 2025

19 comments

7 in this archive, depth 4

best — the order this archive was captured in

u/phase_two_pete73 points·8 months ago

Inter-lab variance on this kind of assay is routinely 1–2 points. Different column, different gradient, different integration.

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u/coldchain_karenMOD22 points·8 months ago

Flair changed to match the content. Read the sidebar before posting next time and we are square.

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[deleted]10 points·8 months ago

[deleted]

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u/anders_karlsenOP4 points·8 months ago

The gel pack lasted 22 hours in a courier van, then liquid. Powder itself fine, the cold chain mostly died in transit.

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u/ferran_laurent3 points·8 months ago

the logger trace is the data that matters, not the packaging promises

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u/low_appetite_lisa-37 points·8 months ago

lane reports need origin, destination, carrier, and actual transit days

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u/amara_dziedzic38 points·8 months ago

The gel pack lasted 9 hours in a courier van, then liquid. Powder itself fine, the cold chain mostly died in transit.

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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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