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c/hplc·submitted 4 months ago by u/kofi_ferreira

unpopular opinion: chromatogram is massively overrated

Methodbranch of 8 comments

I have had 23 orders now and I keep a table, so here is the honest summary rather than a vibe. Material has been consistent. Communication has not. Shipping has varied by about 8 days on nominally the same lane, which matters more in summer than in February. The independent number came back 97.9% against a claimed…

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This branch

8 comments, started 4 months ago
u/teodor_szabo24 points·4 months ago

The evidence standard in c/vendorvetting gets called too strict about once a month, and every time, the thread ends with the complainant agreeing.

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u/nora_lundgren29 points·4 months ago·edited

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

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u/erez_yilmaz-9 points·4 months ago

Strongly agree. Largest single impurity tells a different story than total purity.

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u/ewan_zielinski13 points·4 months ago

The evidence standard in c/vendorvetting gets called too strict about once a month, and every time, the thread ends with the complainant agreeing.

Disagree on that part. 93.7% and 99.3% on the same vial is normal.

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u/hana_lehtinen20 points·4 months ago

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

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u/sofia_petrescu14 points·4 months ago

a round-robin on baseline integration would be genuinely useful

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