Inzichten voor onderzoekskopers
Naslagmateriaal over kwaliteitstesten, hantering, inkoopnormen en de rekenkunde achter reconstitutie — geschreven voor onderzoekers die onze catalogus beoordelen of ermee werken. Al 17 artikelen en er komen er meer bij.
16 artikelen
RP-HPLC purity testing, explained
A plain-language walkthrough of how reverse-phase HPLC measures peptide purity, and why the number on a CoA means what it says.
Cold-chain handling and storage best practices
General guidance on keeping peptides stable from delivery through to reconstitution — freezer, fridge, and light exposure basics.
GMP-audited manufacturing: what it means for research use
What Good Manufacturing Practice auditing actually covers, and why it's a meaningful signal even for research-only material.
Reconstitution and concentration calculations, explained
The arithmetic behind turning a lyophilized vial into a working solution at a known concentration — and where cost-per-mg comes from.
Batch traceability and verification for research buyers
Why every unit carries a batch reference, what it actually links together, and how to verify one before you rely on it in a protocol.
Third-party testing vs. in-house QC: what's the difference
Why an independent lab's signature on a CoA carries more weight than a manufacturer's own internal results — and when in-house testing is still useful.
Shelf life and expiry dating, explained
How an expiry date actually gets set, why lyophilized and reconstituted forms carry very different windows, and what to do as a date approaches.
Choosing a research peptide supplier: signals worth checking
A practical checklist for evaluating a supplier before you order — documentation, traceability, and the questions worth asking directly.
Excipients and buffers: what else is in a lyophilized vial
Peptide content isn't the only thing in the vial. A look at the bulking agents and buffer salts that shape how a formulation reconstitutes and behaves.
Molecular weight and sequence labels, explained
What the molecular weight figure on a peptide label actually represents, and how it connects to dosing-volume and mass-spec identity checks.
Bacteriostatic vs. sterile water: choosing a diluent
The practical difference between the two most common reconstitution diluents, and why the choice affects how long a prepared solution stays viable.
Peptide solubility and pH: what affects it
Why some peptides dissolve cleanly in plain water while others need a specific pH, and what that has to do with a sequence's own chemistry.
Solid-phase peptide synthesis, briefly explained
A short primer on SPPS — the resin-bound, cycle-by-cycle method behind almost every research peptide on the market today.
ISO/IEC 17025 lab accreditation: what it signals
The difference between a testing lab that says it's accurate and one that's been independently assessed against a recognised competence standard.
Sterility testing vs. purity testing: what a CoA does and doesn't cover
Purity and sterility are tested for differently and answer different questions — a high purity figure by itself says nothing about one of them.
Documenting a reproducible research protocol: the basics
The record-keeping habits that make a protocol repeatable months later — batch references, preparation details, and storage conditions, logged as you go.