Peptide blends vs single vials

A blend saves you a vial and fixes the ratio for you. Whether that is a convenience or a constraint depends on whether the ratio is something you want to control.

What a blend actually is

Two or more lyophilized peptides in one vial, at a ratio fixed when the vial is filled. Reconstitute it once and every component goes into solution at that ratio.

The vial's label states the combined mass. A KLOW vial at 80 mg holds 80 mg of peptide across four components, not 80 mg of each. The batch's lab report states the amount of each one.

What you gain and what you give up

The last row catches people. A blend has no single molecular weight and no CAS number, so there is no molar figure for the vial as a whole. Our calculator reports mg/mL for a blend and leaves the molar column to the components. That is the chemistry, not a gap in the tool.

When a blend is right

When the ratio is not a variable you are testing, and carrying one vial instead of four is worth something. The pairings we sell as blends are the ones that appear together in published protocols often enough that a fixed ratio is a reasonable default.

When single vials are right

When the ratio is the point. When you want each component's own mass-spec line as a separate identity check. Or when you only need one of the components and would be paying for three you do not use.

What the report shows

Each component is tested on its own, so a blend's report has a line per peptide rather than a single purity number for the vial. Read it the same way you would read any report, one component at a time. How to read a peptide lab report walks through the format, and peptide blends explained covers the chemistry in more depth.

Which to buy

A blend when the ratio is fixed anyway and one vial beats four. Singles when the ratio is yours to set or you want each molecule's own report line. Either way it ships free with a Janoshik report on the vial.

For research use only. Not for human or animal consumption.