If a supplied lot fails agreed specifications, we’ll replace it at no cost or refund its purchase price in full.
Quality test failed? Free replacement or full refund.
Off-spec? Free replacement or full refund.
Reading a Peptide HPLC Trace — A 5-Minute Field Guide for Bench Scientists. Read our briefing →
Reading a peptide HPLC trace — a field guide. Read →
On reading HPLC traces. Read →
HPLC / MS verification
HPLC and MS answer different questions. HPLC helps describe purity and impurity behavior. MS confirms mass identity. A strong review uses both without pretending either one is a complete sequence proof alone.
HPLC purity and trace interpretation
MS identity and mass confirmation
Impurity-profile review
Orthogonal evidence discussion when sequence proof matters
A lab needs to know what a method can and cannot prove. HPLC, MS, and sequence analysis answer different questions about a peptide lot.
For high-risk method development, impurity standards, or sequence-sensitive assays, buyers should ask whether additional orthogonal evidence is appropriate.