Coenzymes
Coenzyme and cofactor research materials supplied as laboratory research materials for analytical use only.
Products
About this category
Related research
Reference material from the Quality & Testing category.
How to Read a Certificate of Analysis
A Certificate of Analysis is a batch-specific summary of tests, specifications and reported results. Its value depends on traceability, suitable methods, clear acceptance criteria and an authentic link to the material supplied.
Understanding HPLC Peptide Purity Testing
High-performance liquid chromatography can separate and measure detectable components under a defined method. It is highly useful for peptide purity analysis, but its result must be interpreted alongside method details and complementary identity testing.
Understanding LC-MS Peptide Identification
Liquid chromatography–mass spectrometry combines chromatographic separation with mass-based detection. It can provide strong evidence about peptide molecular identity, but the result must be interpreted alongside the method, expected chemical form and complementary analytical data.
Peptide Purity Explained
Peptide purity is not one universal measurement. Chromatographic purity, chemical identity, peptide content and the amount of non-peptide material answer different analytical questions and should be reported separately.
Sterility Testing Explained
Sterility testing examines a defined sample for viable microorganisms under specified conditions. A passing result is important evidence, but it cannot by itself guarantee that every unit in a batch is sterile.
Bacterial Endotoxin Testing Explained
Bacterial endotoxin testing evaluates contamination by endotoxins associated with Gram-negative bacteria. It is a separate quality attribute from sterility and requires a suitable method, defined limit and control of sample interference.
Frequently asked questions
See our quality process and documentation library for how each batch is checked before dispatch.