Swiss Chems pricing is INSANE — $89 for what QSC sells for $28

labquiet_amy said:

For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine.

I read this differently from labquiet_amy, on substance rather than tone. Pushing back on the anecdote-stacking. Twenty people reporting the same thing is twenty samples from the same self-selected pool, not twenty independent confirmations.

labquiet_amy said:

For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine.

Right, and the exception is worth naming rather than left implied, because the exception is where people get into trouble.

labquiet_amy said:

For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine.

Thank you — that is the clearest version of this I have read, and I have read a lot of them. Printing the relevant bit and taking it with me.

Clinical perspective, offered as context rather than as advice. Order of operations matters more than any single choice here: establish a baseline, change one thing, wait long enough for it to express itself, then measure again under the same conditions.

Ask again with the specifics and you will get a better answer than this one.

OP back with an update, since a thread like this is useless without one.

Update, and it is the boring outcome: nothing was wrong. The measurement I was reading had moved less than its own week-to-week variation, which somebody said upthread and I did not believe.