Topic summary

Adsorptive losses at low concentration, and why dilute solutions are fragile

Practice › Storage & stability storage cold chain beyond-use date

This is a generated summary. It shows the 5 most-liked posts from a topic of 21, in their original order, with the accepted answer included where one exists. It is a reading aid and it will miss nuance — the full topic is the record.

NLoughranTL3Regular6 Nov 2025#1

Adsorptive losses at low concentration, and why dilute solutions are fragile — setting out what I have, and where I think it stops being reliable.

Collecting what is known about adsorptive losses in one place, because it is currently spread across a category, two tag pages and a thread that is hard to find.

This is a summary rather than new work, and I have attributed each part to where I found it.

34 likes 9mo

journalclub_wrenTL3Regular19 Jan 2026#10

b.jankowiak, post #2: Confirming the opening post from a second method, which matters more than confirming it from a second person. What is reasonably well supported: refrigeration slows degradation, repeated warming and cooling is worse than either state alone, light exposure is worth avoiding, and adsorptive losses matter more in dilute solutions. Go to post

Genuine question rather than a rhetorical one: has anyone here actually observed adsorptive losses, as opposed to read about it? The thread is long and I cannot tell.

17 likes in reply to #2 6mo

s.mbekiTL212 Feb 2026#14

Post #10 put the caveat in the right place and I want to underline it.

Refrigeration slows degradation. Repeated warming and cooling is worse than continuous refrigeration. Light exposure is worth avoiding. The concentration matters because adsorptive losses are proportionally larger in dilute solutions. All of that is reasonably well supported.

Reading it again, the caveat matters more than the finding.

27 likes 5mo

v.baptistaTL27 Mar 2026#18

Where I part company with post #14, and it is a narrow parting.

Freeze-thaw: some peptide solutions tolerate freezing poorly because ice crystals damage protein structure. Whether your specific solution tolerates it depends on the formulation and is not something to test empirically. The conservative position is not to freeze.

Somebody will have a better source than mine, and I hope they post it.

20 likes 5mo

n.dziedzicTL224 Mar 2026#21

Post #20 describes the usual case. This is about the unusual one.

Reporting rather than recommending, on adsorptive losses. What happened is above. Whether it should have is a different question and not one I am qualified to answer.

25 likes 4mo

Read the full topic (21 posts)

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