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To arrange for a return use the contact form or email customer_support@sci-zone.com. We can only accept returns of unopened kits and products within 30 days of receipt. Any returns after 30 days are in store credit only if the return is approved in advance. All returns are credited as store credit upon receipt for international orders or for Paypal / Credit card orders after 30 days of payment. There is a 20% re-stocking fee for orders returned valued at $500 or more. Customers are responsible for return shipping costs unless the product arrives damaged or defective. Please contact us before returning any package! We're reasonable people and we hope you are too! Contact us if you have any issues and we'll do our best to help you out!

sci_Zone, Inc uses two carriers, USPS (United States Postal Service) and UPS (United Parcel Service). USPS is traditionally cheaper and does not provide detailed tracking. UPS is sometimes faster and a little more expensive, but has a high-quality tracking system. (Tracking information is emailed when the package is shipped). We do not offer Saturday delivery as an option for UPS at this time. When in doubt about choosing a shipping method, we suggest UPS.

For UPS shipping services actual weight is the package weight rounded up to the next whole pound. sci_Zone uses Dimensional weight, this reflects package density, which is the amount of the space a package occupies in relation to its actual weight. Dimensional weight may apply to all shipping services. For more information about Dimensional weight pricing and UPS's rates and fees visit UPS.com. Check out what Dimensional Shipping is in our video!

We do not offer drop shipping or "blind shipment".

• USPS First Class shipments are untrackable. Once it has been sent it’s pretty much outside of our control. There is no way to track packages. They are also not guaranteed services. First class mail can take up to 2 weeks. First class mail is low cost and used at your own risk, it is only permitted for orders under $200. Insurance is automatically calculated and added to your order. Lost package claims may be filed between 45 and 90 days after shipment. USPS has experienced many slow downs and delays - here's an overview of what we've seen for some customers.
• Priority Mail (USA) is now both guaranteed (up to $50) and trackable (package receives up to 8 scans during the shipping process). Priority mail can take up to 3-5 business days once shipped. Priority Mail is only offered for domestic orders under $200.
• UPS Ground is low cost ground delivery, and is insured and tracked. Delivery time is not guaranteed, but is almost always under 6 days.
• UPS 3-Day, 2-Day and Next-day are high-speed air delivery, and are insured and tracked. Delivery is guaranteed from when it is picked up and scanned by UPS, not necessarily when it is shipped. We have a daily UPS pickup, Monday through Friday, for same day shipment place orders by 11am ET.

All of the quoted transit times are in business days, and do not include weekends, US holidays, etc.