Topic portal·22 articles

Portal:Quality and testing

Certificates, independent laboratories and the ways both fail

Introduction

Independent testing exists because a supplier's own certificate is a claim rather than a measurement the buyer has verified. Four services are referred to throughout this wiki — Janoshik Analytical, Medutest, PeptideMeter and VendorInvestigate — and each has a different methodology, a different reporting practice and a different set of blind spots.

This portal also covers the failure modes: underfilling, forged reports, inflated purity claims and the sampling problem that undermines all of them.

Picture of the month

Distribution of reported HPLC area percent across community-submitted reports. The left tail is the interesting part.

Selected article

Chinese Peptide Company — Chinese Peptide Company Co., Ltd. (CPC) is a research-compound supplier in Hangzhou, China. Organisation article: identity, operations, product range, independent testing record and reception.

98 revisions since 2 August 2024. Discussion · history

Things you can do

Label every community-derived figure as self-reported, without exception.
Document each service's sampling procedure in its own article rather than by comparison.

Items here are deliberately small enough to finish in one sitting. See Project:Verifiability before adding sources.