Intersection · Sourcing × Janoshik Analytical

Sourcing topics tagged Janoshik Analytical

Topics in Sourcing carrying the tag Janoshik Analytical. Independent analytical laboratory widely used for third-party purity testing.

37 topics

Topic	Participants	Replies	Views	Activity
How the vendor documentation pages are maintained, and by whom certificate of analysis Janoshik Analytical batch & lot numbers documentation quality Solved How the vendor documentation pages are maintained, and by whom I have a specific reason for asking rather than idle curiosity, and the context is below. Vendor documentation pages keeps being re-asked here…		2	6k	4h
Chain of custody for a sample you posted yourself PeptideMeter third-party testing Janoshik Analytical blind sampling Chain of custody for a sample you posted yourself Writing it up because I had to work it out twice and would rather nobody else did. I was wrong about chain of custody in a thread last spring and I would like…		2	7.3k	5h
Chain of custody for a sample you posted yourself — one year on VendorInvestigate Janoshik Analytical blind sampling third-party testing Posting this under the heading it deserves: Chain of custody for a sample you posted yourself — one year on Everything below is what sits behind that. Posting a small dataset on Chain of custody. It is mine,…	+28	32	50k	15h
Reporting a good result: why nobody bothers and why they should third-party testing Janoshik Analytical certificate of analysis batch & lot numbers Reporting a good result: why nobody bothers and why they should — setting out what I have, and where I think it stops being reliable. Reporting a good result: setting out the arithmetic in full, because I…		2	3.5k	17h
Comparing documentation quality across the directory, tabulated third-party testing disputed Janoshik Analytical batch & lot numbers Comparing documentation quality across the directory, tabulated — setting out what I have, and where I think it stops being reliable. I have spent a fortnight trying to pin comparing documentation quality…	+7	11	29k	19h
About the Independent verification category Janoshik Analytical Medutest PeptideMeter Pinned Wiki Janoshik, Medutest, PeptideMeter and VendorInvestigate results, how to submit a sample, and how to read what comes back. This post is a community wiki: any member at trust level 3 or above can edit it, and…	+1	5	5.8k	23h
Revisiting: The report format the maintainers ask for, and why each field is there batch & lot numbers Janoshik Analytical documentation quality third-party testing Posting this under the heading it deserves: Revisiting: The report format the maintainers ask for, and why each field is there Everything below is what sits behind that. Structured report rather than an…	+100	108	57k	1d
[2026 update] A report I filed that turned out to be wrong, and the correction batch & lot numbers third-party testing documentation quality certificate of analysis On the subject in the title: A report I filed that turned out to be wrong, and the correction Working notes rather than a conclusion. Structured report rather than an opinion, following the format the…	+15	19	18k	2d
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ — does this still hold? PeptideMeter VendorInvestigate third-party testing Janoshik Analytical Asking directly, because I could not find a straight answer: How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ — does this still hold? A question about how a record should be read rather than…	+24	28	8k	1mo
Blind submission and why it changes minds — the long version Medutest third-party testing Janoshik Analytical Posting this under the heading it deserves: Blind submission and why it changes minds — the long version Everything below is what sits behind that. A narrow question about Blind submission, deliberately…	+98	113	18k	2mo
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ — a second dataset Janoshik Analytical blind sampling PeptideMeter VendorInvestigate Solved How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ — a second dataset I have a specific reason for asking rather than idle curiosity, and the context is below. Posting a small dataset on…	+42	46	46k	2mo
Second pass at: What "verified" means on our vendor pages, stated narrowly Janoshik Analytical documentation quality third-party testing batch & lot numbers Solved Second pass at: What "verified" means on our vendor pages, stated narrowly — setting out what I have, and where I think it stops being reliable. A question about how a record should be read rather than about…	+94	102	20k	3mo
[2026 update] What a purity-only report leaves out PeptideMeter third-party testing Janoshik Analytical The question in the title: What a purity-only report leaves out I will give what I have already checked below so nobody repeats it. Structured report rather than an opinion, following the format the…	+97	103	5.2k	3mo
Turnaround times and what they mean for a decision PeptideMeter Medutest Janoshik Analytical VendorInvestigate Turnaround times and what they mean for a decision Writing it up because I had to work it out twice and would rather nobody else did. A question about turnaround times that I think has a definite answer,…		4	29k	3mo
Choosing which test to pay for, given a fixed budget third-party testing VendorInvestigate Medutest Janoshik Analytical On the subject in the title: Choosing which test to pay for, given a fixed budget Working notes rather than a conclusion. A question about how a record should be read rather than about a supplier. We have…	+60	70	49k	3mo
What a documentation review can and cannot tell you — a second dataset Janoshik Analytical VendorInvestigate blind sampling third-party testing The question in the title: What a documentation review can and cannot tell you — a second dataset I will give what I have already checked below so nobody repeats it. Posting a small dataset on documentation…		4	170	4mo
Second pass at: Submitting a sample: the process end to end Janoshik Analytical PeptideMeter Medutest blind sampling Solved Second pass at: Submitting a sample: the process end to end Writing it up because I had to work it out twice and would rather nobody else did. Posting a small dataset on Submitting a sample. It is mine, it is…	+12	16	41k	4mo
Interpreting a result that disagrees with the supplier's certificate Janoshik Analytical Medutest PeptideMeter third-party testing Interpreting a result that disagrees with the supplier's certificate 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…	+129	153	7.3k	5mo
Publishing an inconvenient result: a case study — the long version Janoshik Analytical PeptideMeter Medutest blind sampling Publishing an inconvenient result: a case study — the long version Writing it up because I had to work it out twice and would rather nobody else did. A narrow question about Publishing an inconvenient result,…	+68	74	12k	7mo
What a purity-only report leaves out Medutest VendorInvestigate third-party testing PeptideMeter Solved What a purity-only report leaves out — that is the question, and I have not found it answered plainly anywhere I have looked. Purity-only: setting out the arithmetic in full, because I have had to do it twice…	+92	105	4k	8mo
Reconciling a supplier certificate with an independent result third-party testing Janoshik Analytical certificate of analysis Reconciling a supplier certificate with an independent result — setting out what I have, and where I think it stops being reliable. Reconciling a supplier certificate: setting out the arithmetic in full,…	+18	24	347	9mo
Publishing an inconvenient result: a case study Medutest VendorInvestigate third-party testing Janoshik Analytical Wiki On the subject in the title: Publishing an inconvenient result: a case study Working notes rather than a conclusion. Publishing an inconvenient result, and specifically the version of it that the…	+59	70	992	11mo
What a documentation review can and cannot tell you Medutest VendorInvestigate Janoshik Analytical blind sampling Solved Wiki What a documentation review can and cannot tell you — that is the question, and I have not found it answered plainly anywhere I have looked. Something about documentation review does not reconcile and I would…	+79	83	950	11mo
[2026 update] Comparing documentation quality across the directory, tabulated batch & lot numbers documentation quality disputed certificate of analysis Solved Closed On the subject in the title: Comparing documentation quality across the directory, tabulated Working notes rather than a conclusion. Structured question about turnaround and what it signals. I have started…		3	18k	11mo
Revisiting: Filing a first vendor report: a worked example batch & lot numbers documentation quality third-party testing disputed On the subject in the title: Revisiting: Filing a first vendor report: a worked example Working notes rather than a conclusion. A question about Filing a first vendor that I think has a definite answer,…		2	60k	11mo
The report format the maintainers ask for, and why each field is there — what changed since third-party testing disputed Janoshik Analytical The report format the maintainers ask for, and why each field is there — what changed since Writing it up because I had to work it out twice and would rather nobody else did. Structured report rather than an…	+29	35	6.6k	13mo
One lot is one lot: when a report becomes a pattern documentation quality certificate of analysis batch & lot numbers disputed Solved 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…		2	19k	14mo
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ blind sampling PeptideMeter Medutest third-party testing How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ I have a specific reason for asking rather than idle curiosity, and the context is below. A question about how a record should be read rather…	+117	130	3.3k	14mo
Filing a first vendor report: a worked example third-party testing batch & lot numbers Janoshik Analytical documentation quality 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. Working notes on filing a first vendor rather than a conclusion. I would…	+1	5	12k	15mo
One lot is one lot: when a report becomes a pattern — the long version third-party testing Janoshik Analytical certificate of analysis batch & lot numbers Closed 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…	+137	152	46k	16mo

Sponsored PeptideMeter — peptide analytics and supplier verificationPurity analysis and structured supplier verification, published as dated records rather than scores. Referenced throughout our sourcing documentation.View analytics →