Policies

Shipping Policy

Effective August 1, 2026

Domestic shipping only. Shipping is currently limited to eligible United States destinations confirmed during order processing. Regular website checkout offers Standard shipping for $20.00, free when merchandise after discounts is $400.00 or more, and UPS 2nd Day Air for $50.00, never free. Checkout requires an explicit shipping insurance choice. Selected insurance is charged at $1 per $100 of merchandise after discounts, rounded up to the next $100; declined insurance is $0. Insurance does not affect free Standard shipping eligibility. Coverage and claims remain subject to carrier/insurer terms and this Shipping Policy.

Order confirmation

Submitting checkout does not start fulfillment. We first confirm availability, documentation, the shipping destination, and payment instructions. Fulfillment begins only after the order and payment are confirmed.

Incoming items

Items marked “Pre-order · Incoming” are not ready for immediate shipment. Any estimated timing is informational and may change. Order-specific timing and cancellation terms will be communicated before final confirmation.

Address accuracy

You are responsible for providing a complete and accurate shipping name and address. Contact us immediately if a correction is needed. Address changes may not be possible after a label is created or a package is transferred to the carrier.

Processing and delivery estimates

Paid, confirmed orders for in-stock items are normally processed and transferred to the carrier within 3 business days after payment confirmation. Business days are Monday through Friday, excluding federal holidays. Pre-order or incoming items, address corrections, payment or documentation holds, unusually large orders, severe weather, and other circumstances outside our reasonable control may require additional time. If we expect a material processing delay, we will contact you using the information associated with the order.

After carrier acceptance, Standard shipping is generally estimated to arrive within 2–5 business days. UPS 2nd Day Air is generally estimated to arrive within 2 business days. These are carrier transit estimates, not guaranteed delivery dates, and they do not include our processing time. Destination, weather, carrier interruptions, and other conditions may cause delays.

Tracking

When tracking is available, it will be sent to the contact information associated with the order. Carrier scans and delivery estimates are controlled by the carrier and may be delayed.

Lost or undelivered packages

A package will not be reviewed for replacement, account credit, refund, or another lost-package resolution until either carrier tracking has shown no movement for at least 10 consecutive business days or the package is at least 10 business days past the carrier’s latest estimated delivery date. Weekends and federal holidays do not count as business days. This waiting period may be waived if the carrier confirms earlier that the package is lost, unrecoverable, or being returned to sender.

Meeting either waiting period allows the claim to be reviewed but does not guarantee a replacement, credit, or refund. The available resolution depends on tracking records, insurance coverage, address accuracy, carrier findings, and the circumstances of the shipment.

Package-opening video and claims

Before breaking the package seal, start a continuous video that clearly shows the shipping label, all sides of the sealed package, and the complete opening and unpacking. Claims for missing or damaged items must include this video. Without it, KNC may be unable to verify the claim, and a replacement or refund is not guaranteed. Keep all packaging and contents until the review is complete.

Delivery issues

For a missing, damaged, delayed, or misdirected package, contact [email protected] promptly. Include the order reference, package label, issue description, and clear photographs when applicable. Keep the package and all contents until review is complete.

Returned or refused packages

Packages returned because of an incorrect or incomplete address, refusal, failed delivery, or other recipient-side issue may require additional shipping charges before reshipment. Any available resolution depends on package condition and the circumstances.

Research-material handling

Review package condition promptly on arrival and follow the storage information supplied for the specific research material. Do not use any package that appears damaged, compromised, or inconsistent with the confirmed order; contact us first.