Inventors:
Michael W. Purcell - Mainville OH
Sheng Sheng Yang - Marshallville OH
John Trifone Martin - Scotts Valley CA
Richard R. Reckner - Cincinnati OH
Jeffrey L. Harris - Hollister CA
Assignee:
Tekmar Company - Cincinatti OH
International Classification:
G01N 3112
Abstract:
An analytical instrument measures carbon content of a liquid sample. The instrument includes a sample inlet, a reagent inlet, a rinsing solution inlet, a reaction chamber, a waste outlet and a syringe pump. A multiple port valve has a plurality of ports which are coupled to the sample inlet, the reagent inlet, the rinse solution inlet, the reaction chamber and the waste outlet. The valve also includes a primary port coupled to the syringe pump and selectively fluidically couplable to each of the remaining ports.