Resources
The documentation, explained for the bench.
Reference guides to the paperwork and analytical methods behind every lot. How to read a Certificate of Analysis, what each test on the panel measures, and how to handle and trace research materials. Reference only, never clinical.
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The full reference library, grouped by what each guide covers.
Documentation
Reading the paperwork that travels with every lot.
5 min readHow to read a Certificate of Analysis
A Certificate of Analysis records what an independent lab measured for one specific lot. Here is what each section reports and how to match it to the vial in your hand.
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4 min readWhat third-party testing means
A certificate is only as independent as the laboratory behind it. Here is what third-party testing means, and why an outside lab's name on a COA carries weight a self-declared spec sheet does not.
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4 min readRetest dates and how a lot is dated
A certificate carries several dates, and the retest date is the one researchers ask about most. Here is what each date means, and what a retest date does and does not imply.
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Analytical methods
What each test on the panel actually measures.
5 min readHPLC and mass spec: what each analysis measures
Two methods appear on almost every certificate. One answers how much of the target compound is present; the other answers whether it is the right compound at all.
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4 min readEndotoxin testing, explained
Endotoxin is one of the measures on the standard panel. Here is what it screens for, how it is measured, and how the result is reported.
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4 min readWater content and the Karl Fischer test
Water content is one of the measures on the panel for lyophilized material. Here is what it tracks, how the Karl Fischer titration measures it, and how the result is reported.
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4 min readSterility and compendial testing for solutions
Solution products are checked differently from lyophilized powders. Here is what a sterility or compendial line on a certificate records, and why it appears in place of water content.
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Specifications
How acceptance criteria are set and reported.
4 min readWhat "within specification" means
A specification is a set of acceptance criteria agreed before testing. A result is within specification when it falls inside that range. It is a statement about conformance, nothing more.
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3 min readReading appearance on a certificate
Appearance is the simplest line on a certificate and the easiest first check when a lot arrives. Here is what it records and how to use it.
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Handling & storage
Keeping lyophilized material stable on the bench.
Traceability
Matching the vial in hand to its certificate.
4 min readLot numbers and traceability
A lot number is the thread that connects a vial, its certificate, and your own records. Here is what a lot is and why each one is documented separately.
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4 min readReceiving records and chain of custody
Traceability does not end when a lot ships. A short receiving routine keeps a lot tied to its certificate inside your own facility.
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