Effective date: October 1, 2026
Where we ship
We ship only within the United States: the 50 states and Washington, DC.
We do not ship to:
- addresses outside the United States;
- US territories, such as Puerto Rico and Guam;
- military and diplomatic addresses (APO, FPO and DPO); or
- freight forwarders or package reshipping services.
PO boxes are accepted. Orders to a PO box ship by USPS.
If an order has an address we cannot ship to, we cancel it and refund you in full.
Dispatch origin
Orders ship from Seattle, Washington. Our company business address is in Hong Kong; it is not the dispatch or returns address. We do not offer delivery outside the United States.
Processing time
- We pack and ship orders within 1 business day after payment, Monday to Friday, except US federal holidays.
- Orders placed on a weekend or holiday start processing the next business day.
- Some orders need a short review before they ship (see our Terms of Sale). If that causes a delay, we will email you.
- If we cannot ship within the time stated, we will email you with a new estimate. You can then cancel for a full refund.
Carriers and cost
Available shipping options and costs are shown at checkout before you pay. Standard delivery is estimated at 3 to 7 business days after dispatch within the United States. Allow the processing time above in addition to transit time. The estimate is not a guaranteed delivery date; the carrier and destination may change it.
Shipping cost is shown at checkout before you pay. Standard US shipping is free when merchandise totals $55 or more before discounts.
Packaging
We use protective packaging for sealed glass vials. Please keep the vial labels and your order details so we can help with any delivery or quality issue.
Cold weather
Glass vials can crack if their contents freeze. In very cold weather we may hold shipments to cold areas for a few days, or add insulation. If we hold your order, we will email you.
Lost packages
If tracking has not updated for 7 business days, or your order has not arrived 7 business days after the estimated delivery date, email support@tinybac.com with your order number. We will open a claim with the carrier and send you a replacement or a refund.
If tracking shows your order as delivered but you cannot find it, please check with neighbors, your building's mail room and your local post office. Then email us within 7 days of the delivery date. We will work with the carrier to trace it.
Damaged or wrong items
If a vial arrives broken, leaking or with a damaged seal:
- Email support@tinybac.com within 48 hours of delivery.
- Include your order number and photos of the vials, the inner packaging and the shipping label.
- We will send a free replacement or refund the affected vials.
If you received the wrong item or vials are missing, email us within 7 days of delivery.
Please do not send broken glass back to us. Dispose of it carefully, following your laboratory's procedures.
See our Refund Policy for full details.
Address problems
Please check your address at checkout. If it is wrong, email us straight away. We can change it until the order ships.
If a package comes back to us because the address was wrong or incomplete, or because delivery was refused, we will either refund the product price minus shipping costs, or reship once you pay for new shipping.
Contact
Shipping questions: support@tinybac.com