This page provides live inventory information. You can find out what amount is currently held in storage, if it is availble for allocation and even what PO it originates from.
To try out type "Product1" into the search field, select "SKU" as the search criteria and click search. When results are found click on the row to find further information. To try out a wildcard search type "%" into the search field, select "Description" as search criteria and then click search.