ISO 17025 Standardized Quality Control
Quality, Purity & Analytical Testing
Every single compound distributed by Cove Labs undergoes rigorous dual analytical validation. We publish lot-specific Certificates of Analysis with complete chromatogram transparency.
Our Methodology
Independent Dual-Stage Analytical Verification
Purity claims are meaningless without empirical chromatographic data. At Cove Labs, we subject every synthesis batch to two distinct analytical disciplines conducted by independent, ISO/IEC 17025-accredited testing facilities.
1
Reversed-Phase HPLC (RP-HPLC)
Measures exact chromatographic purity percentage (standardized to ≥ 98.0% minimum, typical batches exceed 99.2%). Identifies any chemical impurities or deletion sequences.
2
Electrospray Ionization Mass Spectrometry (ESI-MS)
Confirms the exact molecular mass and elemental identity of the peptide chain, verifying that the molecular structure perfectly corresponds to theoretical sequence weights.
3
Karl Fischer Moisture & Bioburden Testing
Ensures residual moisture content remains below 3.0% post-lyophilization to eliminate hydrolysis risk during extended cold storage.
Chain of Custody
The 5-Stage Synthesis & Testing Lifecycle
From automated solid-phase assembly to nitrogen-sealed dispatch.
Phase 1
Fmoc Solid-Phase Peptide Synthesis (SPPS)
High-yield sequential amino acid coupling on specialized cross-linked polystyrene resins with automated washing and deprotection steps.
Phase 2
Cleavage & Preparative HPLC Purification
TFA cleavage from solid support followed by multi-pass preparative reversed-phase HPLC column purification to isolate target molecular fractions.
Phase 3
Lyophilization Under Nitrogen Blanketing
Sublimation under deep cryo-vacuum removes all solvent traces, generating ultra-fine sterile lyophilized powder cakes in USP Type I borosilicate vials.
Phase 4
Blind Third-Party Analytical Batch Testing
Randomized sample vials from each lot are submitted for independent RP-HPLC purity quantification, ESI-MS molecular confirmation, and endotoxin assays.
Phase 5
Certificate of Analysis Issuance & Secure Storage
The batch is approved only if purity 98.0%. Lot-specific COAs are generated and stored in our climate-controlled -20°C repository prior to dispatch.
