Monsanto Company

Jacques J Delente

Lloyd E Weeks

Richard A Schoenfeld

A biochemical device and method for the determination of dissolved gases in solution is provided which employs a dry electrode/sample interface. Dissolved oxygen or other gas concentration in a liquid sample is measured by its diffusion through a selectively permeable membrane which is an integral part of a disposable receptacle. The receptacle makes contact with a gas-sensing electrode at the locus of the selectively permeable membrane whereby the determination of the concentration of said gas is made by the electrode without ever touching the liquid sample.

Discrete biochemical electrode system

A Factor IX preparation is separated from plasma by selective adsorption of Factors II, IX and X to the substantial exclusion of Factors VII and VIII with 0.025-0.1% by weight of a water-insoluble, cross-linked polyelectrolyte copolymer of ethylene and maleic anhydride containing pendant diloweralkylaminoloweralkyl functional groups.

Method of separating a Factor IX preparation from plasma using

The propagation and/or maintenance of living cells in vitro is accomplished by attaching and growing cells on one side or surface of a hollow fiber membrane. The attached cells are propagated and/or maintained by passing oxygen through the membrane from the other side and into contact with the cells and simultaneously incubating the cells in a nutrient medium. This method is employed in tissue and cell culturing of altered and unaltered cells which attach to a surface for maintenance and growth.

Growing community of inventors

University City, MO, United States of America

Jacques J Delente