Order Information

For customers in Europe, please click here.

For customers in China, please click here.


Orders can be placed by phone (+1-650-558-8898), by fax (+1-650-558-1686), by e-mail ([email protected]), or through our website.

We accept all major credit cards, including American Express, Visa, MasterCard, and Discover. Payment can also be submitted by company check, cashier's check, bank transfer, or direct deposit. Pro-forma invoices will be provided upon request.

For payment via purchase order (PO), new customers must first provide trade references and credit history. You can download and fill out our standard credit application document by clicking here. Please e-mail this information to [email protected] when submitting your order.

For a copy of our W-9 form, please click here.



All orders will be shipped via FedEx unless otherwise instructed. To ensure the stability of our products during transit, we reserve the right to ship certain items on dry ice. This may increase the shipping cost.


We guarantee that materials are of the stated quality at the time of sale. We do not take responsibility for the use and handling of the product and any liability for consequential, special, indirect, or incidental damage resulting therefrom. Buyer assumes all responsibility for verifying the identity of chemical composition and technical data referenced on each catalog item, whether online or in print.

Return Policy:

Before returning any items, please contact our customer service department ([email protected]) to receive a Return Merchandise Authorization (RMA) number. Items returned without an RMA number will not be accepted. Specific return shipping instructions will also be provided. For any products ordered in error, a 20% restocking fee may apply.

We reserve the right to refuse returns of any radioactive products, custom-made products, or temperature-sensitive assay kits. Any modification to protocols do not qualify for refunds, discounts or replacements.


All products we sell are intended for research use only and are not intended for human consumption. We do not search for existing patents on our products. We are not responsible for determining the existence of such patents and whether use of our products may constitute an infringement on these patents.

Other Information:

To view our complete terms and conditions, please click here.