[ CERTIFICATE LIBRARY ]
ACTIVE LOT
RECORDS
[ DATED · PER BATCH · RETAINED ]
The full certificate archive: HPLC, ESI-MS, endotoxin and sterility per lot — published against the batch code on your vial and retained after the batch sells through.
RESEARCH USE ONLY.NOT FOR HUMAN OR ANIMAL USE.
STRATUM
WHAT WE TEST · EVERY LOT · BEFORE IT IS LISTED
01HPLC purity
02ESI-MS identity
03LAL endotoxin
04Dated certificate
Absence is recorded, not papered over.We do not publish numbers we do not hold.
Quality›COA library
[ 13 CERTIFICATES ON FILE ]
Compound / lotPurityIdentityEndotoxinRecord
2HPLC purity
Reverse-phase C18 at 220 nm against a qualified reference. Chromatogram published with every certificate. ≥98% required to list.
3ESI-MS identity
Observed monoisotopic mass matched to the expected sequence within ±0.5 Da. Identity confirmation, not inference from purity alone.
4LAL endotoxin
Kinetic chromogenic LAL on every peptide lot, reported in EU/mL against a ≤0.25 EU/mL specification.
5Shipping & handling
- Orders before 2 PM ET ship same or next business day; median order-to-ship 48 business hours.
- Free first-class shipping over $150; flat $5.99 first class (3–5 d) under that.
- Tamper-evident secondary packaging, plain discreet outer shipper, tracking on every order.
- US domestic; no PO boxes, APO/FPO, forwarders or reshippers.
6Returns & reship
- One free reship per order for a failed shipment. A failed shipment requires photo proof.
- If a batch fails your own re-testing, send the result; we re-test the retained sample and reship or refund.
- Unopened returns within 15 days of delivery per tracking information; processed as store credit only.
- Wholesale from 50 vials (−30%) and 100 vials (−50%, dedicated batch): [email protected]