Last updated: October 1, 2026
Where we ship
We ship within the United States only, including APO, FPO and PO Box addresses. We do not ship internationally and cannot accept orders for delivery outside the United States.
Order cutoff and processing
Orders placed before 1:00 PM CT (Central Time) on a business day begin processing the same day. Orders placed after the cutoff, at weekends, or on public holidays begin processing on the next business day.
Processing takes up to 72 hours. You will receive a shipping confirmation with tracking once the package leaves us.
Transit
Packages are shipped via USPS. Transit takes up to 10 business days after dispatch. Transit times are carrier estimates and are not guaranteed. Carrier delays, weather and holiday volume can extend them.
Shipping cost
- $8.00 flat rate on orders under $150.00
- Free shipping on orders of $150.00 or more
Packaging and conditions
Orders are packed in plain, unbranded outer packaging. Materials are shipped at ambient temperature. We do not use cold-chain or refrigerated shipping. Lyophilised material is stable for the transit periods above when sealed; store each item on arrival at the condition stated on its product page.
Address accuracy
You are responsible for the accuracy of the delivery address you provide. We cannot redirect a package once it has been dispatched. Orders returned to us because of an incorrect or incomplete address can be reshipped at your cost.
Risk of loss, lost and stolen packages
Title and risk of loss pass to you when the carrier takes possession of the package. Where tracking shows a package as delivered, we are not able to issue a refund or replacement. If a package is marked delivered but not received, file a claim with USPS and contact your local post office; we will provide the shipping documentation you need.
Returns
All sales are final. Because of the nature of research materials, we cannot accept returns or exchanges, and we do not offer refunds for change of mind or incorrect ordering.
Damaged or defective items
If your order arrives damaged or materially defective, email ominza2k25@gmail.com within seven (7) days of delivery with:
- Your order number;
- Photographs of the outer packaging as received;
- Photographs of the affected vial and its label; and
- A photograph of the shipping label.
Claims received after seven days cannot be considered. Where a claim is accepted, we will, at our option, replace the affected item or refund the amount paid for it. Do not discard the packaging until the claim is resolved.
Refused and undeliverable shipments
Refused shipments are treated as final sales. Shipping charges are not refundable.
Order changes and cancellations
We can only change or cancel an order before it enters processing. Email us as soon as possible with your order number; once a package is packed or dispatched we cannot alter it.
Contact
Shipping questions may be sent to ominza2k25@gmail.com, or by post to Ominza LLC, 150 N East River Rd, Unit 305, Des Plaines, IL 60016, United States.