In peptide research, purity is everything. The percentage reported on a Certificate of Analysis reflects how much of a vial’s contents is the intended peptide versus residual solvents, truncated sequences, or other byproducts of synthesis. Even small impurities can introduce variables that confound experimental results.
A purity level of 99% or higher is the benchmark for serious research because it minimizes those variables, allowing observed effects to be attributed to the target compound rather than contaminants. Purity is typically measured by High-Performance Liquid Chromatography (HPLC), which separates the components of a sample and quantifies each one.
When evaluating a research peptide, look beyond the label: a verifiable HPLC report plus mass-spectrometry identity confirmation provide the evidence behind the number. Every Pristine Aminos lot is third-party tested to confirm both identity and ≥99% purity before release.
For laboratory and research use only. Not for human or veterinary use, consumption, or therapeutic application.