FWIW, "museum-grade" sounds great, but doesn't mean anything. The gift shops at the San Francisco, New York, and Paris fine arts museums have reproductions with noticeable and disagreeable color shifts, tonality inconsistencies with the original, and frequently look like they didn't even get a focus lock.

It might be good to highlight how you're aware of these issues and what you're doing to ensure high fidelity reproductions.

Educate your would-be customers to be more discerning!