Trying to decide between Peptidescientific (peptidescientific.com) and another supplier before I spend any research budget. Their public listing shows a product catalog but not much else, so I'm trying to get straight answers.
What's the full catalog scope, and do per-batch COAs come posted next to each listing instead of only on request? Which methods back those COAs—HPLC, mass spec, etc.—and is testing in-house or third-party?
Where are they headquartered and where do shipments originate, plus typical transit times and cold-chain handling? How's pricing work: per vial, quantity tiers, or quote-only? Any minimum order? And what storage and handling specs ship with each product? Not trying to be difficult, just don't want to commit blind.