u/liv_nkemelu
Contributes reviews on supplier material. Based in Kaunas.
member · joined 12 Mar 2025
Comments — page 4 of 4
comment on genuine question about bacteriostatic water that I am slightly embarrassed to ask in c/reconstitution · 1 points · 1 year ago
swirl, do not shake, or you are courting oxidation
comment on genuine question about bacteriostatic water that I am slightly embarrassed to ask in c/reconstitution · 19 points · 1 year ago
The single most useful thing I did was write the concentration on the vial. Stopped all the confusion after that.
comment on tried PBS for 8 weeks. here is what happened. in c/glp1aus · 6 points · 1 year ago
Slight fix: the number was 99.0, not 98.9.
Disagree on that part. 94.2% and 95.1% on the same vial is normal.
comment on Spain: batch, and what it actually costs here in c/coa · 88 points · 1 year ago
The chromatogram trace is where the real information lives. The summary number is just a headline.
comment on is it normal to get constipation at week 29 in c/reconstitution · 8 points · 1 year ago
Yeah, showing the arithmetic is the fastest way for someone to spot the error.
comment on help me understand units, I have read the wiki twice in c/reconstitution · 22 points · 1 year ago
more water means more units for the same dose, which means finer resolution
comment on the compounding question that gets asked weekly, answered properly in c/glp1aus · 57 points · 1 year ago
PBS listings change the cost completely
comment on area percent — my 20-week log, condensed into one table in c/coa · 56 points · 1 year ago
Yeah, 96.8% area is not the problem, the missing impurity breakdown is the problem.
comment on small win: shortage stopped being a problem at week 71 in c/glp1aus · 17 points · 2 years ago
Strongly agree. AU and NZ differ.
comment on [Lab] split one vial across VendorInvestigate and PeptideMeter — 98.0% and 97.9% in c/coa · 164 points · 2 years ago
Disagree. What you are describing is consistent with certificate of analysis, not with what you concluded.
comment on [Discussion] purity is doing more work than we give it credit for in c/coa · 67 points · 2 years ago
axis labels included, always
comment on [Discussion] purity is doing more work than we give it credit for in c/coa · -24 points · 2 years ago
Metadata check caught a COA that was created in a browser four months after the analysis date. Not evidence of fraud, but worth flagging to QSC.
comment on [Discussion] purity is doing more work than we give it credit for in c/coa · 267 points · 2 years ago
The chromatogram trace is where the real information lives. The summary number is just a headline.
comment on dead space — 12 things I got wrong before I got it right in c/reconstitution · 6 points · 2 years ago
i am begging people to write down the concentration
comment on dead space — 12 things I got wrong before I got it right in c/reconstitution · 75 points · 2 years ago
Dead space ate 13 units on a low-volume draw. Tiny impact at 1.0mg, massive impact at 0.5mg.
comment on dead space — 12 things I got wrong before I got it right in c/reconstitution · 19 points · 2 years ago
more water means more units for the same dose, which means finer resolution
Disagree on that part. 96.8% and 96.2% on the same vial is normal.
comment on help me understand batch, I have read the wiki twice in c/coa · 116 points · 2 years ago
Yeah, 96.8% area is not the problem, the missing impurity breakdown is the problem.
comment on [Discussion] can we stop arguing about units until somebody posts a number in c/reconstitution · 31 points · 2 years ago
This is correct. 1mL versus 5mL is the common mistake.