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tried tracking for 13 weeks. here is what happened.
The title is the argument: tried tracking for 13 weeks. here is what happened. Here is the rest of it. Numbers, in the order they matter: 13 weeks. Choose a format you…
u/rosa_sandvik
Contributes reviews on supplier material. Based in Łódź.
member · joined 13 Apr 2025
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comment on [Method] the gradient everyone uses for sema and why it under-resolves the des-amido in c/hplc · 15 points · 4 days ago
Not convinced by that integration. Dropping the baseline there absorbs part of the shoulder into the main peak.
comment on [Country Guide] what changed in the import rules this year in c/customs · 7 points · 14 days ago
That delay was at clearance, not with the carrier. The lane table separates them for exactly this reason.
comment on retention time shifted 0.4 min and nobody wants to talk about it in c/hplc · 58 points · 19 days ago
integration decisions move the number more than the sample does
comment on New Zealand: shortage, and what it actually costs here in c/glp1aus · 8 points · 1 months ago
Australia and New Zealand are separate systems and get conflated weekly
comment on [Discussion] lane is doing more work than we give it credit for in c/intlshipping · 5 points · 1 months ago
Not convinced by four data points. That is not a lane yet, it is an anecdote with a route attached.
comment on help me understand New Zealand, I have read the wiki twice in c/glp1aus · 20 points · 1 months ago
Someone posted US advice in an Australian thread and it took four replies to untangle it. Say your country.
comment on [PSA] HPLC is not what most of this community thinks it is in c/hplc · 1 points · 1 months ago
Yes — system suitability first. Without it the number is an assertion about the instrument, not the sample.
comment on help me understand PBS, I have read the wiki twice in c/glp1aus · 7 points · 3 months ago
the Medsafe position in New Zealand is its own thing entirely
comment on help me understand declared value, I have read the wiki twice in c/customs · 26 points · 3 months ago
research-use-only labelling is not a customs category
comment on [Discussion] the log advice in here is 3 years out of date in c/dosinglogs · 10 points · 3 months ago
Yes — write the concentration in the log as well as on the vial. Belt and braces and it costs nothing.
comment on [Discussion] we are measuring method development at the wrong time and calling it noise in c/hplc · 25 points · 4 months ago
Ran a blank after a high-concentration injection and found the carryover I had been calling an impurity.
Agreed. And the corollary is that the method line on a certificate is not decoration, it is the number’s provenance.
comment on someone explain gradient to me like I have not read a paper in years in c/hplc · 8 points · 4 months ago
That is area percent, not mass percent. The trace cannot give you the second one.
comment on carrier — 23 things I got wrong before I got it right in c/intlshipping · 137 points · 5 months ago
origin, destination, carrier, month — post all four or the report is noise
comment on [Question] is 98.6% actually fine or am I being sold a rounding error in c/hplc · 1 points · 5 months ago
Carryover from a previous high-concentration injection looks exactly like a small impurity.
peak_area_pete is right — the integration choice is a decision and it should be stated alongside the result.
comment on genuine question about chromatogram that I am slightly embarrassed to ask in c/hplc · 84 points · 5 months ago
Did you run a blank between injections?
comment on [Discussion] can we stop arguing about carrier until somebody posts a number in c/intlshipping · 37 points · 5 months ago
a quoted lead time you can hold them to is worth more than a fast one you cannot
comment on tried tracking for 13 weeks. here is what happened. in c/dosinglogs · 19 points · 6 months ago
How long have you been logging?
comment on tried tracking for 13 weeks. here is what happened. in c/dosinglogs · 85 points · 6 months ago
Is the concentration recorded anywhere in the log?
comment on help me understand LC-MS, I have read the wiki twice in c/hplc · 266 points · 6 months ago
Yes — system suitability first. Without it the number is an assertion about the instrument, not the sample.
comment on [Question] how do you actually verify transit time in c/intlshipping · 14 points · 7 months ago
Push back: comparing a July transit with a February one on the same lane is not a comparison.
comment on the Australia thing finally clicked for me and I want to write it down in c/glp1aus · 14 points · 7 months ago
do not import US advice into an Australian thread
comment on week 53 check-in — 17kg down, muscle cramps manageable, one thing confusing me in c/dosinglogs · 1 points · 7 months ago
Correction: those two entries are 21 weeks apart, not consecutive, which changes how the middle of that series reads.
comment on week 53 check-in — 17kg down, muscle cramps manageable, one thing confusing me in c/dosinglogs · 0 points · 7 months ago
Are the missed weeks in there as blanks or dropped entirely?
comment on week 53 check-in — 17kg down, muscle cramps manageable, one thing confusing me in c/dosinglogs · -6 points · 7 months ago
A log is a record of what you did.
amara_dziedzic is right about blanks. Silent gaps make the series lie.
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week 53 check-in — 17kg down, muscle cramps manageable, one thing confusing me
week 53 check-in — 17kg down, muscle cramps manageable, one thing confusing me. Full detail below, and I have tried to keep the editorialising out of it. Figures up…
comment on someone explain New Zealand to me like I have not read a paper in years in c/glp1aus · 1 points · 8 months ago
compounded supply arrangements changed and the threads have not caught up
Agreed — the database rather than the coverage, every time.
comment on [Discussion] we are measuring HPLC at the wrong time and calling it noise in c/hplc · 35 points · 8 months ago
report the method or do not report the number
comment on three years of declared value threads, summarised so you do not have to read them in c/customs · 202 points · 9 months ago
Cosigning on paperwork. The boring documents are the ones that matter when a process starts.
comment on unpopular opinion: most of what gets said here about carrier is guesswork in c/intlshipping · 66 points · 11 months ago
Push back: comparing a July transit with a February one on the same lane is not a comparison.
comment on [Meta] proposal — a flair for gradient posts in c/hplc · 2 points · 11 months ago
report the method or do not report the number
comment on small win: dose history stopped being a problem at week 16 in c/dosinglogs · 5 points · 11 months ago
the boring logs are the useful ones
comment on reading purity threads from 2024 and half of it aged badly in c/hplc · 8 points · 1 year ago
Small fix — 214nm, not 210. It matters for the comparison you are making with the other run.
comment on [Discussion] TGA is doing more work than we give it credit for in c/glp1aus · 61 points · 1 year ago
The compounded arrangements changed while I was mid-thread and I was arguing from a superseded position.
comment on [Question] is 97.4% actually fine or am I being sold a rounding error in c/hplc · 2 points · 1 year ago
Mass spectrometry answers identity.
kofi_ferreira is right — the integration choice is a decision and it should be stated alongside the result.
comment on [Meta] proposal — a flair for tracking posts in c/dosinglogs · 9 points · 1 year ago
Cosigning on missed weeks. Leaving them blank makes the whole series misleading.
comment on integration — 22 things I got wrong before I got it right in c/hplc · 33 points · 1 year ago
Disagree. Inter-lab spread of a point or two on this assay is ordinary and calling it a discrepancy misleads people.
comment on three years of gradient threads, summarised so you do not have to read them in c/hplc · 63 points · 1 year ago
Same view — reporting the gradient is what makes a result checkable rather than merely stated.
comment on reading New Zealand threads from 2024 and half of it aged badly in c/glp1aus · 126 points · 1 year ago
Someone posted US advice in an Australian thread and it took four replies to untangle it. Say your country.
comment on three years of shipping threads, summarised so you do not have to read them in c/intlshipping · 7 points · 1 year ago
a lane with four reports is not yet a lane