Shipping & returns

Last updated September 17, 2026.

Choose Ground, 2 day, or Next day on the order form and pay that amount there. Pick Ground, 2 day, or Next day at checkout. That amount is added to what you pay now. These rules apply to every K.I.S.S. Research shipment, whether the request started on this site or on the order form.

Processing

Paid requests are typically packed within 1–2 business days, excluding weekends and holidays. Research products are kept frozen until shipment. If we use insulation or a cold pack, we will say so when we confirm — a lyophilized vial on the shelf does not by itself promise a cold chain.

Charges

• Flat Rate Ground — $10.50
• 2 day — $18.50
• Next day — $42.50

The method you pick is what we book, and the charge is on the request total. Free shipping coupons waive the selected method. A site-wide free-shipping offer, when we turn it on, waives Ground only — 2 day and Next day stay charged. Delivery windows are estimates. Weather, volume, and the carrier can move a date. Restricted jurisdictions may be refused.

Your address

The address on the request is the address we give the carrier. We are not responsible for delay or loss from an incomplete or wrong address. If you need a change before it ships, write us through Contact with the request ID. After the carrier has the package, we cannot promise an address change.

Tracking

When it ships we send the tracking number to the email on the request. Once the carrier accepts the package, carriage is with them.

Missing, late, or lost

• Wrong address on the request — we will not reship at our expense.
• If it has not arrived, wait until 5 days after the expected delivery date, then write us with the request ID. Packages more than 30 days past the expected date are treated as lost and we will look at a reship or refund.

Returns

Colorado does not require a general right of return when the rule is disclosed before you pay. Research chemicals are not returnable once shipped. Opened, reconstituted, or temperature-abused vials cannot go back on the shelf.

If the package is damaged, incomplete, or the wrong identity, write us through Contact within 7 days of delivery. Include the request ID and clear photographs of the product, the label, and the packaging. If it is on us, we will replace the line or refund it to the original method within 7–14 business days.

Refusal

We may refuse or cancel any order that appears intended for human use, that would violate applicable law, or that we cannot fill from current stock.