PE 22-28

PE 22-28 10mg — 10-Vial Pack is supplied as lyophilized powder under nitrogen. Typical reconstitution is in sterile or bacteriostatic water; the exact concentration depends on your protocol. Our free reconstitution calculator computes mL per dose and insulin-syringe units from any combination of vial size, water volume, and target dose.

Batch PE-2607 of PE 22-28 10mg — 10-Vial Pack is verified in-house at 99.3% HPLC main-peak purity, with molecular weight confirmed by LC-MS and endotoxin screened by LAL assay. That in-house COA — chromatogram, mass spec trace, and purity call — is bundled with your order as a downloadable PDF. Independent third-party re-verification can be arranged for a specific batch on request; it isn't run by default.

All orders ship via DHL, UPS, or FedEx from our China facility, insulated for transit, to 58 countries. Customs duties are prepaid by us (DDP) — no surprise charges on delivery. Estimated transit time is about 10–15 days door to door. Tracking number is emailed when the shipment is scanned by the courier.

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Several cognitive peptides — particularly Selank and Semax — have been studied via intranasal administration in published research. Nasal formulations are typically prepared at lower concentrations (around 0.1-0.5 mg/mL) with adjusted osmolarity. QSC ships the lyophilized peptide; the choice of administration route and formulation is up to the researcher.

Yes — most cognitive peptides are light-sensitive once in solution. Store reconstituted material in amber vials or wrapped in foil and keep refrigerated. Avoid repeated freeze-thaw cycles. Typical post-reconstitution stability is 4-6 weeks at 2-8°C in bacteriostatic water.