1. Batch-specific purity certificates
Not a generic “99% pure” claim — an actual certificate of analysis tied to the batch you’re buying, from an independent lab, published where you can read it. If a supplier can’t show the paper, the number is marketing. Ours are on the purity results page.
2. Domestic stock
Australian stock means days in transit, tracked domestic post, and no customs lottery. Overseas dropshippers mean weeks of ambient transit and parcels that sometimes never arrive.
3. Proper formats and labelling
Lyophilised powder in sealed glass vials, labelled with compound and quantity, research-use labelling intact. Pre-mixed “ready” solutions from unknown suppliers are a red flag — solution stability without cold chain is poor.
4. The BAC water question
A supplier who sells peptides without mentioning bacteriostatic water is betting you already know. Reconstitution needs it — bundled or bought alongside.
5. Realistic claims
Research peptides are exactly that — compounds for research use, not approved therapeutics. Suppliers making medical promises are telling you how seriously they take the rest of their operation.