I edited my post as it was QSC specific - didn’t mean to be misleading. Vendors who can’t manage chain-of-custody irk me. It sets the buyer up for disappointment.however ... some vendors are offering during promo specific batch number and show upfront jano test for the batch - example is GB4 from GYC right now
SRY also selling upfront tested batch right now but not batch numbers (yet) only top colors id