Technical
Peptide Purity Selection Guide: Which Grade Fits Your Assay?
2026-10-22 · OnepureTech
Choosing the right purity grade saves budget without compromising data quality.
| Grade | Typical application |
|---|---|
| Crude | Library screening, pilot tests |
| Desalted | Cost-sensitive preliminary work |
| >70-75% | Immunogens, peptide arrays, ELISA titers |
| >80-90% | WB, enzyme substrates, blocking peptides, IHC |
| >95% | Quantitative ELISA/RIA, bioassays, NMR, MS |
| >98% | SAR, clinical research, X-ray, sensitive experiments |
All grades ship with the full HPLC chromatogram so you can verify the actual profile.