Lab Journal
Research-grade education on COAs, HPLC purity, endotoxin testing, storage and traceability.
How to Read a Certificate of Analysis (COA)
A COA is the single most useful document in research supply. Here is what each section means and how to check it.
Read more → Lab EducationHPLC Purity Testing: What “99%+” Actually Means
Purity percentages are everywhere, but few people explain how they are measured. A plain-language guide to HPLC.
Read more → Lab EducationEndotoxin Testing and Why It Matters in the Lab
Purity and endotoxin levels are two different things. Here is what endotoxin testing measures and why it is reported separately.
Read more → Lab EducationStoring Lyophilized Materials: Temperature, Light and Moisture
Lyophilized research compounds are stable, but only if stored correctly. The three variables that matter most.
Read more → Lab EducationBatch Numbers and Traceability in Research Supply
A batch number is the thread that ties a vial back to its test results. Here is why it matters.
Read more → Lab EducationThird-Party vs. In-House Testing: Why Independent Labs Matter
A supplier testing its own product has an obvious conflict of interest. Independent verification removes it.
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