Quality
Verified before it ships
Purity claims are only useful if they are traceable. Every CryoStandard lot is tested independently, and the results travel with the vial.
- Step 01
Incoming lot control
Each synthesis lot is quarantined on arrival, assigned an internal lot ID and sampled before any release decision is made.
- Step 02
Independent analytics
Reverse-phase HPLC for purity and ESI-MS for identity, with endotoxin and heavy metal screening where applicable — run by accredited third-party laboratories.
- Step 03
Documentation
A batch-specific certificate of analysis is issued with chromatograms, mass spectra and moisture content, keyed to the lot printed on the vial.
- Step 04
Cold release
Released vials are nitrogen-flushed, sealed and returned to monitored -20 °C storage until the dispatch window.
Specification summary
Typical release criteria
| Test | Method | Specification |
|---|---|---|
| Purity | RP-HPLC, UV 214 nm | ≥ 98.0% |
| Identity | ESI-MS | Conforms to theoretical mass |
| Moisture | Karl Fischer | ≤ 8.0% |
| Endotoxin | LAL | ≤ 5 EU/mg |
| Appearance | Visual | White to off-white lyophilizate |
Certificates of analysis are matched to the lot number printed on your vial and are supplied with every shipment. Archived COAs for prior lots are available on request.
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