GLPHubglpresearchhub.com
Read-only archive. GLP Research Hub is a static community record — nothing here is for sale, no account is needed, and no vote you cast is counted. Why?
Single comment threadYou are looking at one branch of am I the only one who found method development harder than the injections — 41 comments in the full submission. View in context.
14k
c/hplc·submitted 2 years ago by u/elodie_grimaldi

am I the only one who found method development harder than the injections

Labbranch of 4 comments

Been lurking in c/progresspics for about 3 months and finally have something worth posting. Short version: week 82, 7.5mg, and gradient is the bit I still cannot get a straight answer on. I have read the wiki, I have read the last 9 threads, and the answers split roughly down the middle. What I actually want to know…

Read the full submission and all 41 comments →

This branch

4 comments, started 2 years ago
u/hplc_hobbyistMOD1.1k points·2 years ago

Retitled to remove editorialising. Put the evidence in the body.

replysharereportpermalink
u/hamza_weiss812 points·2 years ago

Yeah, the chromatogram profile matters more than the headline number.

replysharereportpermalink
u/week_four_wall531 points·2 years ago·edited

What was the column and what gradient?

replysharereportpermalink
u/clara_danquah273 points·2 years ago·edited

instrument quality is less important than analyst consistency

replysharereportpermalink

← back to the whole thread

About c/hplc

The analytical deep end: RP-HPLC methods, gradient design, integration decisions, LC-MS confirmation, amino-acid analysis, water content, and why two labs can report 98.1% and 96.4% on the same vial and both be right. Post the chromatogram, not the summary line.

32kmembers
130submissions
Sep 2023created
submissions / month, last year
Sponsored

Sigma-Aldrich Standards

Certified reference materials for peptide identity and purity work.

sigmaaldrich.com
More in c/hplc
c/hplc rules
  1. Chromatogram or it did not happen. Axis labels included.
  2. State the method: column, gradient, detection wavelength, injection volume.
  3. Area% is not mass%. Posts that conflate them get a correction flair, not a removal.
  4. Independent community. Nobody here sells anything, and anyone who tries is banned.
  5. Not medical advice. Describe what you did; never prescribe to a stranger.
  6. Claims need evidence. Batch numbers, dated screenshots, independent test reports, or a citation.
  7. No referral links, discount codes or affiliate URLs. Permanent ban, no appeal.
  8. No contact handles, wallet addresses or tracking numbers — they identify people.
  9. Be recognisably decent. Disagree hard, insult nobody.
Full rules and how they are enforced →
Moderators
u/sig_figs_samu/hplc_hobbyistu/peak_area_peteu/mass_spec_maggie
Volunteers. Unpaid, unaffiliated, and reachable through modmail only.
Before you read on

Several compounds discussed on GLP Research Hub are sold for research use only and are not approved for human use anywhere. Nothing here is medical advice and none of it is written by your clinician. If a post reads like an instruction, treat it as a description of what one stranger did.

Full disclaimer →