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vendor-investigate

Page 2 of 5 · 113 questions tagged vendor-investigate.

113 questions · sorted by votes · page 2 of 5

29 votes 5 answers58k views
How do I reconcile 99.4% from VendorInvestigate with 98.4% from the supplier?

Conditions: 99.4% · VendorInvestigate · 98.4%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
asked by two_two_micron 9.3k · 2.0 years ago
29 votes5 answers31k views
How do I reconcile 99.1% from VendorInvestigate with 98.4% from the supplier?

The case in front of me: 99.1% · VendorInvestigate · 98.4%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
asked by jo_vandeberg 23k · 14 months ago
29 votes 5 answers27k views
What has Janoshik published on WXT lots in the last year?

What I am working with: Janoshik · WXT. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone else’s…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
janoshik
janoshik

Janoshik Analytical, an independent third-party testing laboratory widely used by this community for HPLC purity, identity and quantified content…

139 questions
asked by rune_thoresen 16k · 10 months ago
28 votes 5 answers44k views
What does Janoshik verification of WuXi TIDES actually cover?

What I have: Janoshik · WuXi TIDES. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone else’s…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
janoshik
janoshik

Janoshik Analytical, an independent third-party testing laboratory widely used by this community for HPLC purity, identity and quantified content…

139 questions
asked by nine_point_nine 60k · 2.1 years ago
27 votes5 answers38k views
What has Janoshik published on BCH lots in the last year?

The case in front of me: Janoshik · BCH. This is presented as though it settles something, and I am not convinced it does. I have two documents that appear to…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
janoshik
janoshik

Janoshik Analytical, an independent third-party testing laboratory widely used by this community for HPLC purity, identity and quantified content…

139 questions
asked by swab_stopper 8.8k · 18 months ago
27 votes 5 answers26k views
How do I reconcile 95.2% from VendorInvestigate with 97.9% from the supplier?

The case in front of me: 95.2% · VendorInvestigate · 97.9%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
asked by dana_wexler 11k · 10 months ago
27 votes5 answers24k views
What does Medutest verification of Xi’an Mokemei Biotechnology actually cover?

The specifics, since they change the answer: Medutest · Xi’an Mokemei Biotechnology. I have read the primary source rather than the summary, which has left me with…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
medutest
medutest

Medutest, one of four independent testing and verification services referenced throughout this site. Use this tag for its methods, its report…

126 questions
asked by net_peptide 12k · 15 months ago
27 votes0 answers21k views
What has PeptideMeter published on HJ lots in the last year?

The specifics, since they change the answer: PeptideMeter · HJ. I have the document in front of me and I can read the numbers. What I cannot do is interpret them. I…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
peptidemeter
peptidemeter

PeptideMeter, an independent peptide analytics and vendor-rating service. Use this tag for its published datasets, its rating methodology, and how…

107 questions
asked by lukas_sedlacek 16k · 11 months ago
27 votes0 answers11k views
What does Medutest verification of Nantong Guangyuan Chemical actually cover?

Setup, so nobody has to ask: Medutest · Nantong Guangyuan Chemical. I would like help reading this properly rather than being told what conclusion to reach. I have…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
medutest
medutest

Medutest, one of four independent testing and verification services referenced throughout this site. Use this tag for its methods, its report…

126 questions
asked by tobias_reint 20k · 14 months ago
26 votes 5 answers35k views
What has Janoshik published on QSC lots in the last year?

Stated plainly: Janoshik · QSC. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone else’s interpretation…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
janoshik
janoshik

Janoshik Analytical, an independent third-party testing laboratory widely used by this community for HPLC purity, identity and quantified content…

139 questions
asked by fill_volume 22k · 17 months ago
26 votes 5 answers20k views
How do VendorInvestigate and PeptideMeter compare on the same a GLP-1 receptor agonist batch?

For reference: VendorInvestigate · PeptideMeter · a GLP-1 receptor agonist. I am trying to choose between two options that are usually discussed as though only one…

janoshik
janoshik

Janoshik Analytical, an independent third-party testing laboratory widely used by this community for HPLC purity, identity and quantified content…

139 questions
medutest
medutest

Medutest, one of four independent testing and verification services referenced throughout this site. Use this tag for its methods, its report…

126 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
peptidemeter
peptidemeter

PeptideMeter, an independent peptide analytics and vendor-rating service. Use this tag for its published datasets, its rating methodology, and how…

107 questions
asked by swab_stopper 8.8k · 9 months ago
26 votes 4 answers18k views
How do I reconcile 97.1% from VendorInvestigate with 98.8% from the supplier?

Concretely: 97.1% · VendorInvestigate · 98.8%. I think I have a problem. I am not yet sure whether it is a real problem or a measurement artefact. I want to know…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
asked by bufferline42 30k · 18 months ago
26 votes5 answers15k views
Why would VendorInvestigate report 99.1% where the supplier certificate says something higher?

For reference: VendorInvestigate · 99.1%. Something has gone wrong and I would like to know how badly before I decide what to do. Nothing else in the setup changed,…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
hplc
hplc

Reverse-phase high-performance liquid chromatography, the workhorse purity method. Column chemistry, mobile-phase choice, gradient slope,…

503 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
asked by ahmed_zerouali 15k · 7 months ago
26 votes0 answers12k views
What has Medutest published on SGN lots in the last year?

Stated plainly: Medutest · SGN. I have read the primary source rather than the summary, which has left me with more questions. I understand the headline. I do not…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
medutest
medutest

Medutest, one of four independent testing and verification services referenced throughout this site. Use this tag for its methods, its report…

126 questions
asked by h_pergande 71k · 6 months ago
25 votes 5 answers36k views
What has Medutest published on KP lots in the last year?

The case in front of me: Medutest · KP. I would like help reading this properly rather than being told what conclusion to reach. I have the full report including the…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
medutest
medutest

Medutest, one of four independent testing and verification services referenced throughout this site. Use this tag for its methods, its report…

126 questions
asked by dana_wexler 11k · 17 months ago
25 votes0 answers33k views
What does VendorInvestigate verification of Shanghai Wibson Biotechnology actually cover?

Stated plainly: VendorInvestigate · Shanghai Wibson Biotechnology. The figures are clear enough; the question is what they mean and what they do not. I can supply the…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
asked by kelvin_lam 7.6k · 2.2 years ago
25 votes0 answers33k views
What has VendorInvestigate published on SSA lots in the last year?

The case in front of me: VendorInvestigate · SSA. I would like to know the limits of what can be inferred from this. What I am trying to avoid is over-reading a…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
asked by lucia_marchetti 19k · 2.3 years ago
25 votes 5 answers15k views
What does a VendorInvestigate listing actually evidence?

This is my second independent submission on material from the same supplier. I have the document in front of me and I can read the numbers. What I cannot do is…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
asked by wren_calloway 23k · 18 months ago
24 votes5 answers45k views
Why would VendorInvestigate report 97.9% where the supplier certificate says something higher?

The specifics, since they change the answer: VendorInvestigate · 97.9%. An unexpected observation, and I would like a differential rather than reassurance. The…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
hplc
hplc

Reverse-phase high-performance liquid chromatography, the workhorse purity method. Column chemistry, mobile-phase choice, gradient slope,…

503 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
asked by triple_agonist_q 57k · 2.3 years ago
24 votes 5 answers16k views
Is a 97.1% result from VendorInvestigate comparable to 96.4% from Janoshik?

Conditions: 97.1% · VendorInvestigate · 96.4% · Janoshik. These are treated as interchangeable and I do not think they are. If both are acceptable I would like to…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
reference-standard
reference-standard

Certified reference materials and in-house standards: traceability, the certificate of the standard itself, system suitability, and why every…

185 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
janoshik
janoshik

Janoshik Analytical, an independent third-party testing laboratory widely used by this community for HPLC purity, identity and quantified content…

139 questions
asked by mz_4113 101k · 12 months ago
24 votes 5 answers8.6k views
Is a 99.4% result from VendorInvestigate comparable to 95.2% from Medutest?

Concretely: 99.4% · VendorInvestigate · 95.2% · Medutest. These are treated as interchangeable and I do not think they are. If both are acceptable I would like to…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
reference-standard
reference-standard

Certified reference materials and in-house standards: traceability, the certificate of the standard itself, system suitability, and why every…

185 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
medutest
medutest

Medutest, one of four independent testing and verification services referenced throughout this site. Use this tag for its methods, its report…

126 questions
asked by day_seven_trough 6.7k · 3 months ago
24 votes5 answers6k views
How do I reconcile 99.1% from VendorInvestigate with 96.8% from the supplier?

The case in front of me: 99.1% · VendorInvestigate · 96.8%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
asked by ravenna_pace 14k · 5 months ago
23 votes 5 answers38k views
What has VendorInvestigate published on GGPeps lots in the last year?

The specifics, since they change the answer: VendorInvestigate · GGPeps. The figures are clear enough; the question is what they mean and what they do not. I can…

vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

388 questions
asked by bridget_nyathi 12k · 17 months ago
23 votes 5 answers10k views
How do I reconcile 96.4% from VendorInvestigate with 98.2% from the supplier?

Conditions: 96.4% · VendorInvestigate · 98.2%. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
vendor-investigate
vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questions
asked by sunniva_dahl 22k · 9 months ago