Puro Standard requires independent verification of the carbon removed from the atmosphere

Supplier verification

Puro Standard requires carbon removal suppliers go through a rigorous verification process to confirm that their products are truly carbon net-negative. We take into consideration their lifecycle from cradle-to-gate and require scientific measurement and quantification of the removed CO2 and its residence time in storage.

For more details download the Rules and Methodologies documentation.

Download Puro Standard & Marketplace Rules

Verification process

1. A supplier makes a claim to us on the net-negativity of their products by presenting evidence: Lifecycle Assessment (LCA) or Environmental Product Declaration (EPD) which attests that the product has absorbed more CO2 that it has emitted.

2. Based on this evidence, compliance to Puro methodology requirements is audited by Puro’s independent assessors, who visit the production facility, validate the accuracy of data and issues an audit statement. The costs of the verification are covered by

3. The verified volume of extra carbon absorbed in the products is then issued CO2 Removal Certificates (CORCs) for every metric ton of CO2 removed and stored.

4. CORCs are sold in the marketplace to companies who want to neutralize their emissions by removals and become climate positive.


Become a supplier

Do you have a method that complies with the rules & methodologies of

Apply to become a supplier. methods are independently verified by 

EnergyLink Services


Book a meeting

If you didn’t find the answer to your question on our site, please book a Q&A session with our Supplier Manager.

Book a meeting

loder image