u/joaquin_petrov
Contributes reviews on supplier material. Based in Coimbra.
member · joined 15 Jun 2025
Overview — page 2 of 3
comment on vendor — my 9-week log, condensed into one table in c/vendorvetting · 14 points · 1 year ago
KP order #11, New Zealand, no drama, receipts inside
comment on week 96 check-in — 26kg down, fatigue manageable, one thing confusing me in c/hplc · 151 points · 1 year ago
Crossposting this to c/progresspics because the people who need it are not reading this community.
comment on week 61 check-in — 17kg down, fatigue manageable, one thing confusing me in c/hplc · 7 points · 1 year ago
This is the correct method framing. Column and gradient are load-bearing fields.
comment on [Discussion] the vendor advice in here is 9 years out of date in c/vendorvetting · 26 points · 1 year ago
Cosigning the evidence standard. Receipts make the community.
comment on Spain: gradient, and what it actually costs here in c/hplc · 1 points · 1 year ago
the detector wavelength matters more than people think
comment on [Lab] SGN tirz — VendorInvestigate came back 93.7% against a claimed 94.2% in c/vendorvetting · 1 points · 1 year ago
Cosigning the evidence standard. Receipts make the community.
comment on switched from 1.7mg to 1.0mg and the reflux got better, not worse in c/hplc · 1 points · 1 year ago
Did they post the raw trace or just the summary?
comment on Spain: reship, and what it actually costs here in c/vendorvetting · 97 points · 1 year ago
did they reship, credit, or ghost you?
comment on [Question] Ireland — has anyone got a straight answer on method development in c/hplc · 29 points · 1 year ago
the gradient is doing the separation work, not the column alone
comment on chromatogram: what the trials say vs what this community says in c/hplc · 203 points · 1 year ago
Strongly agree. Largest single impurity tells a different story than total purity.
comment on chromatogram: what the trials say vs what this community says in c/hplc · 52 points · 1 year ago
Slight fix: the number was 97.2, not 97.4. Decimal point, but a fairly consequential one.
comment on stalled for 24 weeks at 7.5mg and I refuse to panic this time in c/hplc · 30 points · 2 years ago
the gradient is doing the separation work, not the column alone
comment on stalled for 24 weeks at 7.5mg and I refuse to panic this time in c/hplc · 71 points · 2 years ago
related substances are where the story lives, not the main peak
comment on 11 months in and testing is still the thing I get wrong in c/vendorvetting · 1.4k points · 2 years ago
did they reship, credit, or ghost you?
comment on small win: testing stopped being a problem at week 65 in c/vendorvetting · -12 points · 2 years ago
Edit to your parent would help — the concentration you quoted assumes one scenario and you have written another above it.
comment on small win: testing stopped being a problem at week 65 in c/vendorvetting · 354 points · 2 years ago
Correct.
Yes, exactly this, and it is the bit that took me 71 weeks to accept.
comment on unpopular opinion: reship is massively overrated in c/vendorvetting · 65 points · 2 years ago
vendor staff must self-identify, full stop
comment on unpopular opinion: reship is massively overrated in c/vendorvetting · 12 points · 2 years ago
receipts or nothing, sorry but that is the rule
comment on [Results] 87 weeks, 36kg, and purity was the hard part in c/hplc · 59 points · 2 years ago
You have restated the marketing copy. What is the actual substance here.
comment on is it normal to get injection-site soreness at week 29 in c/vendorvetting · 16 points · 2 years ago
the reship rate on QST is actually pretty consistent