Knowledge
Technical articles on the analysis, documentation and handling of peptides in the lab.
Peptide glossary: terms from analysis and the lab →Peptide comparisons: data side by side →
How to read a peptide certificate of analysis (CoA)
What a peptide certificate of analysis (CoA) should contain: identity, HPLC purity, peptide content and lot number, and how to check it against your delivery.
5 min read
HPLC and mass spectrometry for peptides: what they show
What RP-HPLC, mass spectrometry and LC-MS tell you about a peptide: purity, identity, typical impurities, and what neither method measures.
5 min read
Peptide content vs purity: the difference explained
Why 5 mg of lyophilisate need not be 5 mg of pure peptide: peptide content, HPLC purity, counterions and a worked example for lab stock solutions.
5 min read
Storing peptides: fridge, freezer and lyophilisate
How to store lyophilised peptides: fridge or −20 °C, opening without condensation, aliquots in solution and sensitive amino acids. General lab practice.
5 min read
Dissolving peptides: solubility for in vitro work
Getting peptides into solution step by step: estimate the charge, choose water, acid or DMSO, check the concentration. An approach for lab assays.
5 min read
Qualifying a peptide supplier: a checklist for labs
What labs and procurement should ask for before the first peptide order: CoA, testing lab, traceability and incoming checks. With a checklist.
5 min read
What Are Peptides? Peptide Chemistry Basics Explained
What peptides are, how they are built and why they matter in research: amino acids, peptide bonds, sequence, synthesis and modifications explained.
6 min read
Buying Peptides: How to Identify a Reputable Supplier
What to look for when buying research peptides: analysis, lot traceability, price per mg, company details and delivery terms. With a checklist.
6 min read
Peptide Nomenclature Explained: Why the Same Substance Has Several Names
Retatrutide, Reta, LY3437943: why research peptides carry several names, what code names, INN, INCI and CAS numbers mean, and how to keep track.
6 min read
Sourcing Peptides in the EU: Shipping, Customs and Payment Overview
Ordering research peptides in the EU: shipping zones and delivery times, VAT for private and business customers, deliveries to Switzerland and payment methods.
5 min read
Bacteriostatic Water for Laboratory Use: What You Need to Know
What bacteriostatic water (BAC water) is, how it differs from sterile water, when it suits lab work and what to look for when buying it.
5 min read
Peptide Content and Batch Testing: What to Check Before Buying
What net peptide content means, how it is measured, why every lot needs its own CoA and how to check a lot step by step.
5 min read
Peptide Mixes in One Vial: Composition, Documentation and Storage
Peptide mixes such as the Wolverine stack, GLOW and KLOW: what is in the vial, how to check amounts and lot data, and what matters when dissolving and storing them.
6 min read
Buying Peptides at a Good Price: Comparing Price per mg
Compare peptide prices fairly: price per mg, peptide content, shipping and minimum order. With a worked example and a checklist for the best peptide shop.
6 min read
Bioactive Peptides: Definition, Formation and Examples from Research
What bioactive peptides and biopeptides are, how peptides form in the organism and in the lab, and which natural sequences research uses as templates.
6 min read