The Peptide CommonsEst. May 2024
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Tags · Sourcing

certificate of analysis

The document a supplier issues for a batch.

49 topics 14 solved Group: Sourcing

Related in this group: batch & lot numbers · Janoshik Analytical · Medutest · PeptideMeter · VendorInvestigate · third-party testing · blind sampling · documentation quality · underdosing · mislabelling · customs · shipping

49 topics · page 2 of 2

TopicParticipantsRepliesViewsActivity
Revisiting: Filing a first vendor report: a worked example
On the subject in the title: Revisiting: Filing a first vendor report: a worked example Working notes rather than a conclusion. Structured report rather than an opinion, following the format the maintainers…
RSMRCI 2 60k 11mo
A field-by-field walk through a certificate of analysis
Posting this under the heading it deserves: A field-by-field walk through a certificate of analysis Everything below is what sits behind that. A documentation question rather than an analytical one. I have a…
ARVMNKKHN+136 147 1.8k 12mo
A report I filed that turned out to be wrong, and the correction
A report I filed that turned out to be wrong, and the correction Writing it up because I had to work it out twice and would rather nobody else did. Structured report rather than an opinion, following the…
DOCIAKSGVR+124 132 12k 13mo
One lot is one lot: when a report becomes a pattern
Posting this under the heading it deserves: One lot is one lot: when a report becomes a pattern Everything below is what sits behind that. Structured report rather than an opinion, following the format the…
NCCRM 2 19k 14mo
Water content on a certificate and why it changes the arithmetic
Water content on a certificate and why it changes the arithmetic — setting out what I have, and where I think it stops being reliable. A documentation question rather than an analytical one. I have a…
VBEPAKJNHB+19 23 24k 14mo
Filing a first vendor report: a worked example
Filing a first vendor report: a worked example Writing it up because I had to work it out twice and would rather nobody else did. A logistics question, since the answers here are usually better than anywhere…
NPDNSPETKF+1 5 12k 15mo
Certificates issued by the seller versus by a laboratory
Posting this under the heading it deserves: Certificates issued by the seller versus by a laboratory Everything below is what sits behind that. I would like to understand what this number means before I…
GACTDEFJV+58 65 1.2k 15mo
A certificate with no method stated: what can you conclude?
A certificate with no method stated: what can you conclude? I have a specific reason for asking rather than idle curiosity, and the context is below. I would like to understand what this number means before I…
MSAWADAKLS+49 57 1.2k 16mo
Documenting a supplier's response to a discrepancy — does this still hold?
Documenting a supplier's response to a discrepancy — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. Structured report rather than an opinion,…
FRTHSAFNLV+47 52 58k 16mo
One lot is one lot: when a report becomes a pattern — the long version
One lot is one lot: when a report becomes a pattern — the long version — setting out what I have, and where I think it stops being reliable. Structured report rather than an opinion, following the format the…
MDGIMYGCH+137 152 46k 16mo
Specification in the result column: why that is a meaningful error — the long version
Specification in the result column: why that is a meaningful error — the long version Writing it up because I had to work it out twice and would rather nobody else did. Posting the method first, because I…
MPGRATYAH+14 18 12k 17mo
Why our vendor pages link the storefront and mark it sponsored
Why our vendor pages link the storefront and mark it sponsored — that is the question, and I have not found it answered plainly anywhere I have looked. A logistics question, since the answers here are usually…
IGARLSSLMI+17 21 335 18mo
Second pass at: Certificates issued by the seller versus by a laboratory
Second pass at: Certificates issued by the seller versus by a laboratory — setting out what I have, and where I think it stops being reliable. A documentation question rather than an analytical one. I have a…
SOLKGDFPN+81 92 20k 18mo
Reporting a good result: why nobody bothers and why they should — one year on
Posting this under the heading it deserves: Reporting a good result: why nobody bothers and why they should — one year on Everything below is what sits behind that. Structured report rather than an opinion,…
MMBJBPBNLA+19 27 4.7k 18mo
About the Vendor reports category
Structured reports on named suppliers. Batch, date, method and document, or it stays in the unverified column. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit…
JMAMJDEC 4 65k 18mo
Follow-up: Reporting a discrepancy without making an allegation
Reporting a discrepancy without making an allegation Writing it up because I had to work it out twice and would rather nobody else did. Structured report rather than an opinion, following the format the…
WMSOML 2 24k 19mo
Second pass at: A field-by-field walk through a certificate of analysis
Second pass at: A field-by-field walk through a certificate of analysis Writing it up because I had to work it out twice and would rather nobody else did. A documentation question rather than an analytical…
ANTMPCNEA+149 164 36k 19mo
Reporting a discrepancy without making an allegation
On the subject in the title: Reporting a discrepancy without making an allegation Working notes rather than a conclusion. Structured report rather than an opinion, following the format the maintainers asked…
MRVTAPFPHB+79 89 1k 22mo
Coming back to: Purity assay versus content assay: two different numbers
Purity assay versus content assay: two different numbers — setting out what I have, and where I think it stops being reliable. I would like to understand what this number means before I repeat it anywhere. A…
PMDTAZOVEV+71 77 31k 23mo