Shipping and returns

Orders are prepared once payment is confirmed, not when the order is placed. Confirmation is normally within a few hours during business days, and often sooner.

Once confirmed, orders are packed and dispatched. You will see the status change on your order page, and the tracking number appears there as soon as the label is created.

We ship within the United States by USPS or UPS with tracking on every order. Shipping is a flat rate, and is free on orders over $300.

Everything ships in plain, unbranded outer packaging with no description of the contents on the outside.

We time dispatch to avoid parcels sitting over a weekend.

If your order arrives damaged, incorrect, or short, tell us within 14 days of delivery with your order number and a photo, and we will replace it or refund it. That is our own policy and it is not conditional on you filing anything with anyone.

If tracking shows delivered and you do not have the parcel, contact us and we will open a trace with the carrier and make it right.

Because these are research materials whose integrity depends on unbroken storage and handling, we cannot accept returns of shipped items once they have left our control, and we cannot resell returned stock. This is standard for laboratory materials and it exists to protect the next customer, not to avoid refunds.

That restriction does not limit the remedies above. Damaged, incorrect, missing or undelivered orders are always replaced or refunded.

An order that has not yet shipped can be cancelled for a full refund. Just ask.

If a parcel is refused or returned because the address was wrong or nobody could receive it, we refund the order less the shipping actually incurred, once it is back with us.