The RUO statement belongs on labels, product pages, checkout and order emails. It only carries weight when everything else in the store agrees with it.
Research use only (RUO)
A statement that a product is sold for laboratory research, not for human or veterinary use.
See it running on your own catalog
Purity does the work these terms describe: batches held until their lab report is in, payments matched to orders, and wording checked before it sends.