About Peptides Peptides: The middle sibling of biology is finally getting the spotlight. We know Amino Acids. We know Protein. But Peptides are the secret sauce in the middle. Article: Peptide PurityPurity levels significantly impact the stability and shelf-life of the peptide after you add a bacteriostatic or sterile water (reconstitution). While purity doesn’t change the speed of the peptide, it changes the potency of your vial.Read More Visit our StoreView our high-purity research peptides and dependable essentials.Shop