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Research
supply
Research use only
Cobalt-blue EJ reusable pen in a cinematic component reveal

Researchpeptidesfrom EJ.

Reusable pens, disposable pens, and refill cartridges for laboratory research.

Browse products
ExploreFor laboratory research only

Explore pens
and cartridges.

Looking for pens?
The cartridge

The cartridge.

EJ refill cartridges are sold separately. Browse by product and strength for your reusable pen.

Explore cartridges

The pen.
Up close.

Explore reusable pens

The reusable body holds a replaceable cartridge.

Illustrative component view of the blue EJ reusable pen and its top-mounted cartridge

What each listing includes

Every listing is
three layers deep.

Check the product details, open any matching lab reports, and read the research-use policy before ordering.

Our research-use policy
  1. Layer 01

    Product details

    Your cart keeps the product, strength, and price you selected.

  2. Layer 02

    Lab reports

    Open supplied reports from a product page when the name and strength match.

  3. Layer 03

    Research use

    For qualified laboratory research.

Why choose us

Why EJ.

View lab reports

  1. Pens and cartridges

    Choose a reusable pen with replaceable cartridges or a sealed disposable pen.

  2. Accessible lab reports

    Read the supplied reports without an account. Check each report against the product, strength, and lot.

  3. Clear specifications

    Compare product names, strengths, and prices before adding a configuration to your cart.

  4. Research focused

    Our catalog is for qualified laboratories conducting nonclinical research.

Research use only

Every product is for qualified laboratory research only. Choose the format and strength that fit your research, and review the available product details and lab reports before ordering.

Research-use policy Terms of use

Questions?

Contact EJ

No. Browse products, prices, and lab reports without signing in.

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