Flash Crash Saleup to−40%
For research purposes only·Not for human consumption·18+·Laboratory grade — Batch tested·For research purposes only·Not for human consumption·18+·Laboratory grade — Batch tested·For research purposes only·Not for human consumption·18+·Laboratory grade — Batch tested·For research purposes only·Not for human consumption·18+·Laboratory grade — Batch tested·For research purposes only·Not for human consumption·18+·Laboratory grade — Batch tested·For research purposes only·Not for human consumption·18+·Laboratory grade — Batch tested·
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04d14h35m16s
from €50
−15%
from €100
−20%
from €135
−25%
from €175
−30%
−40% on selected itemsFree Lélune serum from €50
N°01Halo · Retatrutide 20mg
Batch 2026·07
Retatrutide 20mg
Lab · live
HPLC99,7%
ENDO<0,1 EU
LOTPM·2607·A

Researched.Perfected.

Lab-tested per batch. Discreet from the Netherlands — ordered before 15:00, delivered tomorrow.

COA verified24u NL4,9 · 780+
12 researchers viewing now
N°02§02 — Three best-sellers, three signatures of the atelier

The vials every
lab asks for.

Three peptides that account for more than 60% of our shipments. Each tested on HPLC, endotoxins and heavy metals.

Reta 20mg
01Triple Agonist

Reta20mg.

Triple receptor agonist for research on metabolism, energy expenditure and glucose regulation. 39 amino acids, lyophilised under argon.

€ 150,00
Product detail
KLOW80 Blend
02Four in one · House blend

KLOW80Blend.

50mg GHK-Cu + 10mg BPC-157 + 10mg TB-500 + 10mg KPV — our composed formula for regenerative research. Independently batch tested.

€ 100,00
Product detail
GHK-Cu 100mg
03Copper tripeptide

GHK-Cu100mg.

Research into collagen synthesis, cellular communication and regenerative signalling. 100mg lyophilised in a glass vial, batch tested for purity.

€ 45,00
Product detail
Sale · Limited time

1+1
FREE

Add 2× to your cart → you pay for one only. Valid on our most sought-after formulas — while stocks last.

2× Deals
View all deals
For research purposes only · 18+
N°05Sale · permanent discount

−25%
on classics

We are clearing our most studied vials. Same HPLC verification, same COA, just 25% less — permanently. BPC-157, Ipamorelin, CJC, Epithalon and more.

N°06New this week

Fresh from the
atelier

The latest research formats to arrive in our laboratory. Same HPLC verification, same COA per batch — simply the newest additions to the collection.

View all new drops
49 new drops
N°03§03 — The complete collection

138 products.15 categories.

Click a category for the filterable shop, or click a vial directly to go to the product. Stock is tracked live.

View all 138 in the shop
Triple Agonists
GLP-1 · GIP · Glucagon·12
View category · 12
Regenerative
ECM · collagen · GHK-Cu·08
View category · 8
Melanocortin
α-MSH analogues · research·03
View category · 3
House Blends
Multi-peptide formulas·06
View category · 6
Neuropeptides
Cognition · stress·08
View category · 8
Metabolic
Mitochondrial·17
View category · 17
Lab Supply
BAC water · accessories·09
View category · 9
Pens
Research pen format·20
View category · 20
Pre-orders
Soon back in stock·06
View category · 6
WhatsApp Community

Join the inner circle.

  • First to know about new batches & restocks
  • Exclusive community discount codes
  • Direct contact with the atelier
Join the community

Free · opens directly in WhatsApp

N°04§04 — Philosophy

Science as
a craft.

Every vial is treated as a small object of precision — produced in a controlled environment, tested by independent laboratories and sealed until the moment of research.

Read the philosophy
Batch guarantee
I.
HPLC ≥99%
II.
Endotoxin & ICP-MS
III.
Argon-sealed vials

COA available per batch

N°06 Peptide Passport · Loyalty

Four tiers.
One passport.

Every euro is one point. Climb through the tiers — earn up to 15% permanent discount, always free shipping and birthday gifts.

🥉
Researcher
—
🥈
Aspirant
5%
🥇
Master
10%
💎
Masterly
15%

More on the Passport page

N°07§03b — Research partners speak

Trust isbuilt, vial by vial.

Long-time customers share their experience — a selection from the atelier's inbox.

"First vial in the lab — HPLC confirmed 99.4% purity, exactly as the COA stated. Not a given in this industry."
Dr. M.
Research lab Utrecht
99.4%
HPLC verified
"Ordered Wednesday, in hand Friday. Discreet packaging, lyophilisate properly dry. There's clearly thought behind this."
C. van den B.
Returning customer
<48h
Delivered
"The Vial Configurator gave exactly the info I needed — batch, purity, mg per peptide. No noise, just facts."
T. Janssen
Independent researcher
★★★★★
Clarity
99%
Recommend us
1,500+
Satisfied researchers
≤24h
Answer to questions
N°08Frequently asked questions

Questions that
arise more often.

Should your question not be listed, please feel free to contact the atelier — we answer every question personally.

N°09§06 — Newsletter

Letters fromthe atelier.

Irregular, never pushy — announcements of new batches, restocks and notes on purity. Straight from the atelier, into your inbox.

New batches
Restocks before the shop
Atelier notes
Irregular & never pushy
Private offers
Subscribers first
Atelier letter
~1× per month
Prefer direct contact?
atelier@peptidemeester.org
Customer Service

One point of contact · peptidemeester@proton.me

For all enquiries — orders, returns, payments, complaints and wholesale — please e-mail us directly. We respond within 12 hours. Please include your order number for the fastest assistance.
We use Instagram and TikTok for updates only — DMs are not actively monitored. Please e-mail us for a faster response.

Send us an e-mail
Ma–vr · 9:00–17:00 · NL/EN

Dutch atelier for laboratory peptides. Every vial lyophilized, independently tested and sealed until the moment of research.

Disclaimer

All products on Peptidemeester are intended exclusively for scientific research in controlled environments. Not for human or animal consumption. Ordering for 18+ only.

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Flash Crash Sale · The more you stock up, the more you save.

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04d14h35m16s
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from €13525%
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