No middleman.
From the Netherlands.
GradePurity is a Dutch supplier of premium research peptides. Everything in stock in NL. Ordered today is here tomorrow — fast, clear and no surprises.
Shipped from the Netherlands
Our peptides are in stock in the Netherlands. Everything is ready in our NL warehouse. Ordered before 4pm on weekdays, out the door the same day.
≥ 99% purity
Our peptides are HPLC-tested for purity and MS-verified for identity. The Certificate of Analysis (COA) is available with your order.
Unbranded delivery
No logo on the envelope. No text giving away what's inside. No one sees your order — except you.
Every lot tested — not just our word.
Research-grade isn't a word on the packaging here. Every lot goes through the same checks before it enters stock, and you can review the results.
HPLC purity ≥ 99%
Every batch is tested for purity by high-performance liquid chromatography (HPLC). If a lot falls below that, we don't carry it.
MS identity confirmation
Mass spectrometry confirms the molecular mass, so what's in the vial is what's on the label — no mix-ups, no assumptions.
COA per lot
Every product comes with a Certificate of Analysis that matches the specific batch. Not a generic sample, but the report for your lot.
Lot numbers and traceability
Every vial carries a lot number, so each order traces back to its matching test — from warehouse to COA.
Short supply line. No middlemen.
We buy direct and keep everything in stock in the Netherlands. No extra links to push up the price or blur the origin — and no waiting on customs or import.
We don't promise more than we can back up. Does something work over a timescale of weeks? We say so. Is there no research supporting a claim? Then we don't make it.
For research only.
Our products are intended for laboratory and research purposes — not for consumption by humans or animals. We're deliberately strict about this: it's part of working research-grade.