Comprehensive Quality Verification
Every batch undergoes rigorous testing before release to ensure consistency, purity, and identity.
HPLC Analysis
High-performance liquid chromatography determines purity by separating and quantifying all components in each batch.
Mass Spectrometry
MS verification confirms molecular identity by measuring exact molecular weight against theoretical values.
Peptide Content
Amino acid analysis or nitrogen determination establishes actual peptide content for accurate dosing.
Stability Testing
Ongoing stability programs verify products maintain specifications throughout stated shelf life.
Release Specifications
Products are released only when they meet all established specifications:
- Purity: ≥98% for standard peptides (by HPLC area percentage)
- Identity: Molecular weight within ±0.1% of theoretical (by MS)
- Appearance: White to off-white lyophilized powder
- Solubility: Freely soluble in specified reconstitution solvents
- Water content: Monitored where applicable (Karl Fischer)
- Counter-ion: Verified as specified (typically acetate or TFA)
Included with Every Order
Certificate of Analysis
Batch-specific test results with acceptance criteria.
HPLC Chromatogram
Full trace with integration report.
Mass Spectrum
Observed vs. theoretical molecular weight.
Safety Data Sheet
Handling and safety information.
Method Validation
All analytical methods are validated before use in production QC testing. Validation parameters include specificity, linearity, accuracy, precision, range, and robustness according to ICH guidelines.
Instrument Calibration
Analytical instruments are calibrated and qualified on a regular schedule. Calibration records are maintained and reviewed as part of our quality management system.
Questions About Quality Control?
Contact our quality team for questions about specific test results or analytical methods.