This manual is useful in the purchase of hospital supplies and equipment. It presents specifications for three hundred and sixty-two commodities used by hospitals. It is not contemplated that the hospital buyer will be limited to the details of the specifications presented. He is furnished a description of materials, workmanship and construction details which serve as a guide but still permit him to make such alterations as may be necessary to suit the particular use for which the commodity is intended. Consideration is given to simplification and standardization in the interest of economy. There are four special chapters on purchasing, testing, storage and standardization of commodities.