You can upload a list of parts in a .txt file to automatically add them to your shopping cart. The .txt file must be in a tab-delimited format consisting of a Thorlabs part number and a quantity only. For instructions on how to save your file in the proper format, please click here.
Your cart will remain as long as you have updated any item sometime in the last 30 days while logged in. Otherwise the cart will be emptied every 24 hours.
Make sure that you are logged on if you cannot view your basket contents.