A blend is several compounds in one vial, sold under a single name. A multi-pack is several vials of the same compound at a lower per-vial price. A blend carries the certificate of the component that was tested, and the site says which component that is rather than implying the figure describes the mixture.

Because no purity figure is published for that product's lot yet. A percentage that is not attached to a lot number and a certificate is a slogan rather than a result, so the card says the record is in preparation instead of borrowing a number from elsewhere.

Bacteriostatic water, reconstitution solution and similar consumables. They carry a manufacturer lot rather than a peptide certificate, because the peptide assay panel measures nothing meaningful about a solvent.