You can Order with a P.O. using one of the two methods :
 

A. Upload a P.O.

You can upload a PO from your school during the checkout process using the upload PO function.

B. Fax or Email a P.O.

If you are ordering by mail or fax, please use an authorized purchase order from your school or institution, or include prepayment in full, including shipping and appropriate sales tax (in California). If you would like to download an order form that you can fill out by hand, please click here. Our fax number is (415)552-4087.