Thanks for sharing the enquiry. Glad to help you with this..
The ISO 14024 standard is actually not meant for direct certification using this standard. In itself it has not environmental criteria to use. However, it is actually used to design a eco-labeling scheme for products by choosing a particular environmental impact.
We can still help the client by understanding their requirements. Can you help to collect the following information to help them better:
a. Type of product required for certification
b. What environmental impact to consider for product certification? (Carbon emissions, or water? Or any other impact?)
Likewise, we can suggest the best available standards in the market for certification.
Please feel free to contact me for any further clarifications. Thanks & all the best!!