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RIERINK

Made in Europe

Every vial,on the record.

Research peptides with a lot number you can look up. When a certificate is on file, the batch on the label opens it.

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Specimen 01 / 03

Tirzepatide 40 mg

Content 40 mg

CAS 2023788-19-2

Supplier certificate

Batch feedHPLC · illustrative

HPLC · illustrative

◆ Janoshik Testing Fund · €138.00 raisedTirzepatide 40 mg · Supplier certificateSemaglutide 30 mg · Supplier certificate pendingRetatrutide 20 mg · Supplier certificateLemon Bottle 10 ml · Supplier certificate pendingKPV 10 mg · Supplier certificateAntibacterial water 10 ml · CoA pendingBAC water 10 ml · CoA pending5-Amino-1MQ 5 mg · Supplier certificate pendingAdamax 5 mg · Supplier certificate pendingAdipotide 2 mg · Supplier certificate pendingAra-290 10 mg · Supplier certificate pendingCagrilintide 5 mg · Supplier certificate pendingCagrilintide + semaglutide 5 mg · Supplier certificate pendingDSIP 5 mg · Supplier certificate pendingDulaglutide 5 mg · Supplier certificate pendingDihexa 5 mg · Supplier certificate pendingEpithalon 10 mg · Supplier certificate pendingFOXO4-DRI 10 mg · Supplier certificate pendingGHK-Cu 100 mg · Supplier certificateGlutathione 400 mg · Supplier certificate pendingLL-37 5 mg · Supplier certificate pendingLiraglutide 5 mg · Supplier certificate pendingL-carnitine 600 mg · Supplier certificate pendingMelanotan I 10 mg · Supplier certificate pendingMelanotan II 10 mg · Supplier certificateMelatonin 10 mg · Supplier certificate pendingMazdutide 5 mg · Supplier certificate pendingNAD 100 mg · Supplier certificate pendingOxytocin acetate 2 mg · Supplier certificate pendingPT-141 10 mg · Supplier certificateP21 5 mg · Supplier certificate pendingPinealon 5 mg · Supplier certificate pendingSemax 5 mg · Supplier certificate pendingSS-31 10 mg · Supplier certificate pendingSelank 5 mg · Supplier certificateSurvodutide 5 mg · Supplier certificateSNAP-8 10 mg · Supplier certificate pendingThymosin alpha-1 2 mg · Supplier certificate pendingThymalin 10 mg · Supplier certificate pendingVIP 5 mg · Supplier certificate pending◆ Janoshik Testing Fund · €138.00 raisedTirzepatide 40 mg · Supplier certificateSemaglutide 30 mg · Supplier certificate pendingRetatrutide 20 mg · Supplier certificateLemon Bottle 10 ml · Supplier certificate pendingKPV 10 mg · Supplier certificateAntibacterial water 10 ml · CoA pendingBAC water 10 ml · CoA pending5-Amino-1MQ 5 mg · Supplier certificate pendingAdamax 5 mg · Supplier certificate pendingAdipotide 2 mg · Supplier certificate pendingAra-290 10 mg · Supplier certificate pendingCagrilintide 5 mg · Supplier certificate pendingCagrilintide + semaglutide 5 mg · Supplier certificate pendingDSIP 5 mg · Supplier certificate pendingDulaglutide 5 mg · Supplier certificate pendingDihexa 5 mg · Supplier certificate pendingEpithalon 10 mg · Supplier certificate pendingFOXO4-DRI 10 mg · Supplier certificate pendingGHK-Cu 100 mg · Supplier certificateGlutathione 400 mg · Supplier certificate pendingLL-37 5 mg · Supplier certificate pendingLiraglutide 5 mg · Supplier certificate pendingL-carnitine 600 mg · Supplier certificate pendingMelanotan I 10 mg · Supplier certificate pendingMelanotan II 10 mg · Supplier certificateMelatonin 10 mg · Supplier certificate pendingMazdutide 5 mg · Supplier certificate pendingNAD 100 mg · Supplier certificate pendingOxytocin acetate 2 mg · Supplier certificate pendingPT-141 10 mg · Supplier certificateP21 5 mg · Supplier certificate pendingPinealon 5 mg · Supplier certificate pendingSemax 5 mg · Supplier certificate pendingSS-31 10 mg · Supplier certificate pendingSelank 5 mg · Supplier certificateSurvodutide 5 mg · Supplier certificateSNAP-8 10 mg · Supplier certificate pendingThymosin alpha-1 2 mg · Supplier certificate pendingThymalin 10 mg · Supplier certificate pendingVIP 5 mg · Supplier certificate pending

The Rierink standard

The lot is the record. A result is published only when a document we hold actually prints it.

  1. 01

    No invented purity

  2. 02

    A certificate only for the lot it names

  3. 03

    The lot number is on the label

9
Public certificates on file
24 h
In-stock amounts leave within 24 hours
about 2 days
Transit is quoted with the destination

Chain of custody

From the lot to the bench — nothing we have not recorded.

Four steps, one lot number. If a certificate is on file for that lot, it is one click away.

  1. 01

    Made in Europe

    Each compound is supplied as a numbered lot. One lot, one identity, from the label onward.

    Lot number assigned

  2. 02

    Certificate when we hold one

    A purity figure or a test result is published only when it is printed on a document we hold. Until then the library says the file is pending.

    No invented results

  3. 03

    Certificate published

    When a certificate is public, it sits in the CoA library, matched to the lot printed on the label.

    Public CoA library

  4. 04

    Dispatched after payment

    Amounts on the shelf ship within 24 hours of payment. Amounts that are not on the shelf ship within 1–2 weeks, before the carrier’s transit time.

    Tracked · quoted at checkout

Catalog · 40

Available compounds

Research materials you can order. Amounts on the shelf ship within 24 hours.

Open the CoA library
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We are still the company that picks up the phone. The next researcher finds us because someone wrote down what actually happened: the lot that matched the label, the parcel that arrived late, the reply that took a day too long. That public record is how a young lab earns a name.

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CoA library

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Type the lot number printed on your vial. If that certificate is public, it opens here.

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Janoshik Testing Fund

Independent testing, funded openly.

Testing, funded openly. Our prices don't include lab fees. Researchers who want more independent data can add €2, €5 or €10 at checkout. Every euro goes to Janoshik tests of our own lots, chosen by your votes and published with the lab's verification link.

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Pool · live

Pool · live €138.00

€138.00 of €320.00 for the next test

Retatrutide · 30 mg

Pricing that stacks

Buy more. The quantity tier applies first.

Quantity tiers apply to the units in an order. A payment-method discount, when one is set, applies to that total. The methods do not stack on each other.

Volume tiers

  • 5–10 units−10%
  • 11–20 units−15%
  • 21+ units−20%

The tier follows the number of units in the order.

  • Bank transfer −1%
  • Credit card / Revolut Pay −2%

Worked example

11 × Tirzepatide 40 mg

Before the quantity tier
€890.89
Volume tier (11+)
−15%
Bank transfer
−1%
You pay
€749.67

This example uses a bank transfer, which is 1% less. Credit card and Revolut Pay are manual, 2% less, and a payment link is emailed. Peer checkout for crypto, Revolut, and Wise uses the price without that discount.

Shipping is free when the goods total is over €200.00. The number of vials does not change the shipping price.

Shipping and support

Shipping

Quoted at checkout from the destination. A Portugal delivery is typically about 2 days. Tracking follows once the label exists.

Support

Questions about an order, a lot, or a certificate — call, text, WhatsApp, email, or ask Eline.

On the record

A certificate describes one lot. It is not a medicine authorisation, and it is not a protocol.