anyone else notice area percent kicking in around week 25
Trying to settle this properly because the thread from last year went in circles.
The claim: COA matters. The counter-claim: it is measurement error. Both sides have been asserting it confidently for about 18 months without either producing anything.
What would actually settle it is 19 people measuring the same thing the same way. I have started; my numbers are below. They lean one way but not strongly enough for me to declare victory.
If you have data, post the data. If you have an opinion, flair it as an opinion.
best — the order this archive was captured in
post the whole document, not the headline number
post the whole document, not the headline number
Adding to this: purity is doing more work than the comment implies.
Sent one vial to PeptideMeter and VendorInvestigate. 96.8% and 94.2%. Cost me more than the vial did and I would do it again.
purity and net content are two different numbers, same vial
What is the method line say? Not the technique, the actual method.
axis labels included, always
axis labels included, always
Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.
the related substances line is where the story is
purity and net content are two different numbers, same vial
Three years on this site and the questions have not changed at all. Which is depressing or reassuring depending on the day.
Yeah, 96.8% area is not the problem, the missing impurity breakdown is the problem.
Strongly agree. Mass% and area% are answering different questions on the same document.
the related substances line is where the story is
Disagree. What you are describing is consistent with related substances, not with what you concluded.
no "is this good?" without saying what the compound and claimed purity are
Batch number and date of analysis? Both are load-bearing.
Tracking number removed. It identifies both ends of a shipment.
Cosigning. The batch number is load-bearing information.
That is net peptide content, not purity. Different number, different meaning.
PDF metadata is checkable in fifteen seconds
Cosigning. The batch number is load-bearing information.
the related substances line is where the story is
the method line is doing real work, not just window dressing
What is the method line say? Not the technique, the actual method.
The confident tone is doing a lot of work that the evidence is not.
no "is this good?" without saying what the compound and claimed purity are
I am going to push back on this slightly.
- 1Yeah, 96.8% area is not the problem, the missing impurity breakdown is the…7 comments in this branch · started by u/mikkel_correia
- 2that is the funniest sentence i have read on this site7 comments in this branch · started by u/freya_baptista