Company memberships (Primary Location) are further classified according to the organization’s area of interest related to transport packaging.

Shipper: Any organization enters goods into physical distribution or commerce.

Carrier: Any organization primarily engaged in the transportation or distribution of goods in commerce.

Testing: Any independent laboratory actively engaged in testing packaged products in accordance with ISTA preshipment specifications and certified by ISTA.

Supplier: Any organization in the supply of materials, goods or services related to the physical distribution of goods.

ISTA's membership year begins January 1st. Members receive their renewal invoice in November prior to the beginning of the membership year and renewal payments are due by January 31st. For new members joining during the year, dues are prorated by quarters.