Shipping Policy

This Policy forms part of our Terms of Use and describes where we ship, what shipping costs, how long we take to dispatch your order, and how long the carrier takes after that. Please read it before you buy.

See also our Returns & Refunds Policy and our Terms of Use.

1. Where we ship

• We ship within the United States only, to the 50 states and the District of Columbia.
• We do not ship to U.S. territories (Puerto Rico, Guam, the U.S. Virgin Islands, American Samoa, and the Northern Mariana Islands), and we do not ship outside the United States.
• We ship to residential and business addresses. The delivery address is the one you enter at checkout.

2. Two different clocks: dispatch and transit

• Dispatch is the time WE take to pick, pack, and hand the package to the carrier, counted from payment confirmation.
• Transit is the time the CARRIER takes after it receives the package from us.
• The total time you wait is the sum of the two. That sum is what appears at checkout and in the table in section 4.
• Business days are Monday through Friday, excluding U.S. federal holidays. An order confirmed on a weekend or holiday starts counting on the next business day.

3. Our dispatch commitment

• We dispatch your order within 1 business day of payment confirmation. This window is the same for every method — what changes between methods is the carrier's transit time, in section 4.
• The clock starts when payment is confirmed, not when the order is placed.
• If we cannot dispatch within the window we announced, we email you BEFORE that window ends, with a definite revised date, and you choose: accept the new date, or cancel the order for a full refund. If we do not hear back from you, we cancel and refund.
• The details of that cancellation are in our Returns & Refunds Policy.

4. Methods, prices, and timelines

The prices below are list prices, per order, and are the same ones charged at checkout. Transit times are carrier estimates.

5. Free shipping

• Free shipping applies on product orders of $175.00 or more.
• The amount we look at is the product subtotal after any discounts, not counting shipping. A coupon that brings the subtotal below the threshold also removes the free shipping.
• Free shipping applies to the Standard method only. All other methods are always charged.
• Some coupons grant free shipping on their own, regardless of order value. When that happens, the cart shows the shipping at zero before you place the order.

6. Tracking

• Every order ships with tracking. We email you the tracking number as soon as the package is dispatched.
• Tracking can take a few hours to start showing movement after the number is generated — that depends on the carrier, not on us.
• If you placed the order while signed in, the tracking number and the shipping progress also appear in Your Account on our site.

7. Packaging

• Products ship in tamper-evident packaging.
• We do not use dry ice, refrigerants, or temperature-controlled service.

8. Incorrect or incomplete addresses

• Check your address before placing the order. An incomplete or incorrect address can cause delay or send the package back to us.
• If a package comes back to us for that reason, we contact you to either reship at your expense or refund the price of the products, less the original shipping charge.
• To correct an address before dispatch, email us as soon as possible at [email protected]. After dispatch we cannot change the destination.

9. Delays, damaged or undelivered packages

• Transit times are carrier estimates, not guarantees. Weather, strikes, inspections, and volume peaks can delay delivery after the package leaves our hands.
• The commitment that is ours to keep is the dispatch window (section 3).
• Wrong item or missing item: the mistake is ours, and the deadline and the procedure are in our Returns & Refunds Policy.
• Loss in transit, a package that never arrives, and damage that happens on the way are covered only by Shipping Protection, the optional add-on selected at checkout. Without it, an order lost in transit or damaged on arrival is not replaced and is not refunded.

10. How to contact us

Prime Science Supply
Support: [email protected]
Contact page: contact us
Merchant country: United States

11. Changes to this Policy

We may update this Policy. The version that applies to your order is the one published on the date the order was placed. The date of the last update appears at the top of this page.