The opening post put the caveat in the right place and I want to underline it.
Freeze-thaw is one of those subjects where the general answer and the answer for a specific case diverge, and the thread will go in circles until someone says which one is being asked for.
Visible particulate is a strong signal in the other direction: it is a reason to stop and ask rather than to filter and proceed.
Post #27 put the caveat in the right place and I want to underline it.
The practical version of Freeze-thaw is three sentences long. The rigorous version is three pages and reaches the same conclusion with the conditions attached.
Clarity is a weak test. A solution can lose a significant fraction of its active content to degradation or adsorption while remaining perfectly clear.
I would rather say I do not know than round it up to an answer.
Everything in post #45 holds. The case it does not cover is the one I have.
Where the Freeze-thaw discussion usually stalls is that nobody wants to say "I do not know" and everyone is willing to say "it varies". Those are the same sentence with different clothes on.
Post #45 and I disagree about the size of the effect, not about the direction.
Clarity is a weak test. A solution can lose a significant fraction of its active content to degradation or adsorption while remaining perfectly clear.
The right answer here may simply be that it has not been measured.
Read the full topic (56 posts)
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