GLPHubglpresearchhub.com
Read-only archive. GLP Research Hub is a static community record — nothing here is for sale, no account is needed, and no vote you cast is counted. Why?
Single comment threadYou are looking at one branch of [Discussion] the excursion advice in here is 3 years out of date — 6 comments in the full submission. View in context.
0
c/coldchain·submitted 2 years ago by u/preservative_free_p

[Discussion] the excursion advice in here is 3 years out of date

Discussionbranch of 6 comments

the excursion advice in here is 3 years out of date. Not a hot take, just something I have not seen said plainly here. Hard numbers: 3 years. Anything softer than that is flagged as an impression. On loggers, since I was sceptical and then bought one. A small transit logger costs a fraction of a vial and records the…

Read the full submission and all 6 comments →

This branch

6 comments, started 2 years ago
u/cesar_teixeira-18 points·2 years ago

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.

replysharereportpermalink
u/preservative_free_pOP1 point·2 years ago·edited

Moved everything off the fridge door after reading a thread here and my temperature log immediately got boring.

replysharereportpermalink
u/runa_wikstrom1 point·2 years ago

What was the packaging — rigid outer, gel packs, anything insulating?

replysharereportpermalink
u/preservative_free_pOP-21 points·2 years ago

A transit temperature logger records a distribution, and time above a threshold matters as much as peak temperature.

Agreed, and a logger costs less than the vial you are worrying about.

replysharereportpermalink
u/coa_collectorarchivist1 point·2 years ago

A stability statement is only meaningful with its conditions attached: temperature, duration, light exposure, and whether it covers powder or solution. Ask which.

replysharereportpermalink
[removed]1 point·2 years ago

[removed by moderator]

replysharereportpermalink

← back to the whole thread

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.

27kmembers
95submissions
Oct 2023created
submissions / month, last year
Sponsored

Janoshik Analytical

Independent HPLC and mass spec. The number you get is the number they found.

janoshik.comSponsored

GL Biochem (Shanghai)

Custom peptides and amino acids direct from the manufacturer since 1998. ISO 9001 / cGMP. Batch COA every order.

glbiochem.net
More in c/coldchain
c/coldchain rules
  1. Excursion claims need a logger trace or a photo taken at unboxing. "It felt warm" is not data.
  2. No tracking numbers, ever. They identify you and the recipient.
  3. Stability claims need a source or an explicit "this is my guess" label.
  4. Independent community. Nobody here sells anything, and anyone who tries is banned.
  5. Not medical advice. Describe what you did; never prescribe to a stranger.
  6. Claims need evidence. Batch numbers, dated screenshots, independent test reports, or a citation.
  7. No referral links, discount codes or affiliate URLs. Permanent ban, no appeal.
  8. No contact handles, wallet addresses or tracking numbers — they identify people.
  9. Be recognisably decent. Disagree hard, insult nobody.
Full rules and how they are enforced →
Moderators
u/mod_cold_roomu/coldchain_karenu/ice_pack_auditu/usb_logger_ursula
Volunteers. Unpaid, unaffiliated, and reachable through modmail only.
Before you read on

Several compounds discussed on GLP Research Hub are sold for research use only and are not approved for human use anywhere. Nothing here is medical advice and none of it is written by your clinician. If a post reads like an instruction, treat it as a description of what one stranger did.

Full disclaimer →