Frequently asked questions

10 vials per reference, in multiples of 10, since vials are packed 10 to a tray. You can mix references in one order, as long as each one reaches 10 vials.

Prices are shown per 10 vials. Each reference has a list price that applies from 10 to 49 vials. From 50 vials the price drops 8%, from 100 vials 15% and from 500 vials 22%. The band is set by the quantity of that one reference. From 1,000 vials we quote a dedicated batch.

The smallest order is 10 vials of one reference, at the list price. We do not send single free vials, and small first orders are welcome.

Yes. Every lot is released with an HPLC purity result and an MS identity check. Lot certificate on request: ask on WhatsApp for the certificate of the current lot.

No. Every vial ships unlabeled, with a plain flip-off cap and no printed insert. The product photographs show a sample label so you can tell references apart; it is not applied to the vials you receive. The lot certificate identifies the reference, the lot and the fill.

In stock: 1 to 2 business days after payment; large orders (500 vials or more): 5 to 7 business days. Made to order: 10 to 18 days after payment. Each product page shows which one applies.

By DHL, FedEx or EMS, and UPS on request, in discreet, customs-friendly packaging. Transit takes 5 to 12 days depending on the destination and the carrier, and you receive the tracking number when the parcel is dispatched. Shipping is quoted per destination with your order.

If a parcel is held by customs or lost in transit, we reship it once at our cost. Duties paid delivery (DDP) is available on request for some destinations.

Everything happens on WhatsApp, and nothing is paid on this website. You send the prefilled WhatsApp message. We reply on WhatsApp with the final price and the shipping cost. We then send a proforma invoice from CPS Biotech (HK) Limited on WhatsApp. You pay by T/T bank wire or USDT (TRC20) using the details on the invoice, and send the payment receipt on WhatsApp. We confirm the payment on WhatsApp, dispatch the order and send the tracking number there.

Yes. You may re-test any lot at a laboratory of your choice. When a result falls under our specification, we reimburse the test and replace the lot.

Keep sealed vials frozen at -20 °C, away from light. Each product page gives the storage line for that reference, and the same line is on the lot certificate.

Laboratories and distributors, through a buyer aged 21 or over. All products are for laboratory research use only, and we do not give medical or usage advice.