Two lyophilized research peptides in 5 mg vials, both ≥99% purity by HPLC, compared on identity data, documentation and cold-chain storage. Prices are $64.99 CAD and $79.99 CAD.

Practical handling notes for lyophilized peptide vials: desiccant, cold-chain packaging on arrival, freezer placement and the storage fields worth recording in the lab log.

A ranked shortlist of five small-format lyophilized vials, from 1 mg to 5 mg, with net content, purity method and lot documentation stated for each.

A comparison of solvent options for laboratory stock preparation of lyophilized peptides, with notes on solvent volume, borosilicate vial compatibility and lot labelling.

A field-by-field walkthrough of the certificate of analysis that accompanies each lot we ship: identity, purity, test method, lot number and storage statement.

How to bind a vial, its lot number and its certificate of analysis to an experiment record so reagent traceability survives an audit.