Shipping carriers and methods

We ship using trusted carriers, including USPS, UPS, and FedEx. The carrier and service level for your order may depend on your location, the items ordered, and the option selected at checkout. We reserve the right to choose the most suitable carrier for safe and timely delivery.

Shipping rates and free shipping

Shipping costs are calculated automatically at checkout based on your destination and the shipping method you select, so you can review the total before you pay. We offer free shipping on qualifying orders over $250. Any free-shipping offer applies to standard service and to the destinations stated at checkout.

Delivery estimates

Once dispatched, orders generally arrive within the following windows:

• Domestic (United States): 3 to 7 business days.
• International: 7 to 21 business days, before any customs processing time.

These timeframes are estimates based on typical carrier performance. They begin after dispatch, and they are not guaranteed, since final delivery is in the hands of the carrier.

Order tracking

When your order ships, we email you a shipment confirmation with a tracking number so you can follow its progress. Please allow up to 24 hours for tracking information to become active after you receive the email. If your tracking has not updated for an extended period, contact us and we will look into it with the carrier.

Domestic shipping

We ship throughout the United States. Delivery to certain remote areas may take longer than the standard estimate. If you need to ship to a PO Box or a military APO/FPO address, please contact us before ordering so we can confirm whether the carrier and service can deliver there.

International shipping

We ship to international destinations where it is lawful to do so. Because rules governing research materials differ from country to country, you are responsible for confirming that your order can be lawfully imported and received at your destination, and for meeting any local requirements. Orders that cannot clear customs or be lawfully delivered may be returned or held, and any resulting costs are the customer’s responsibility.

Customs, duties, and taxes

For international orders, import duties, taxes, customs fees, and any brokerage charges are set by the destination country and are the responsibility of the customer. These charges are separate from our shipping fees and are collected by the carrier or the local authority. We have no control over these amounts and cannot predict them.

Risk of loss and title

Title and the risk of loss for the products pass to you once we hand the package to the carrier. From that point, the shipment travels under the carrier’s care. This does not affect your rights for items that arrive lost or damaged, described in the Lost or Damaged Shipments section below.

Incorrect or incomplete addresses

Please check your shipping address carefully at checkout, since we ship to the address you provide. If an order is delayed, returned, or lost because of an incorrect or incomplete address, we may charge the cost of reshipping. If you spot an error, contact us right away, and we will correct it if the order has not yet shipped.

Undeliverable, refused, or returned packages

If a package is refused, unclaimed, or returned to us as undeliverable, we will contact you to arrange reshipment. Reshipping costs, and any return charges applied by the carrier, are the customer’s responsibility. Where a returned order is instead refunded, any original and return shipping costs may be deducted.

Lost or damaged shipments

We package every order carefully to protect it in transit. If your order arrives damaged, or the tracking shows it as delivered but you have not received it, contact us within 7 days of the delivery date. For damage, please keep the packaging and send photos, since these help us file a claim with the carrier. We will work with the carrier to resolve the issue.

Shipping delays

Some delays are outside our control, including severe weather, carrier disruptions, customs processing, and public holidays. We cannot be held responsible for delays caused by these factors once an order has left our facility, though we will always help you track and follow up on a delayed shipment.

Order changes and cancellations

If you need to change or cancel an order, contact us as soon as possible. We can usually accommodate changes before an order has been dispatched. Once an order has shipped, it can no longer be changed or cancelled, and any return would follow our Refund and Returns Policy.

Discreet packaging

We ship all orders in plain, secure packaging that does not disclose the contents on the outside. Your order is handled and packed to protect both product integrity and your privacy.

Research use only

Changes to this policy

We may update this Shipping Policy from time to time to reflect changes in our carriers, rates, or practices. The current version is always the one published on this page, and the “Effective date” above shows when it was last revised.

Contact us

For any question about shipping, tracking, or a delivery issue, please reach our team: