KB Analytical is a third-party laboratory that exists for one reason: to give buyers and vendors an impartial answer to “what’s really in this vial?” We don’t sell peptides, and we don’t take a position on any product — we measure, and we publish.
A C18 reverse-phase column with a water/acetonitrile gradient (0.1% TFA) separates the target from related impurities. UV detection at 214 nm captures the peptide bond directly, and purity is reported as the main-peak area versus total integrated area.
Electrospray mass spectrometry measures the exact mass of the eluting species and compares it against the theoretical mass of the claimed sequence — the definitive identity check, and a second window onto impurities.
A calibration curve built from a certified reference standard converts detector response into an absolute amount, giving a defensible milligram figure versus the label claim.
No result is published until an analyst reviews the chromatogram, mass spectrum, and calibration. Every certificate carries the methods used and the analyst who released it.
A credible analytical lab is built on validated methods and documented quality systems. KB Analytical’s program is structured around the principles of ISO/IEC 17025 — the international standard for testing-laboratory competence — covering method validation, reference-standard traceability, instrument calibration, and controlled reporting.
Compound-specific methods validated for specificity, linearity, and repeatability.
Quantitation tied to certified reference materials with documented lineage.
Immutable certificate IDs and a public registry that prevents document tampering.
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