Patent ID: 6910394
Filing Date: 2005-06-28
Classification: G01N

Abstract:
1. A chromatograph valve for capturing sample material comprising: a valve body providing a first pair of ports formed through an exterior portion of said body, said first pair of ports communicating with an internal passage of said body to permit introduction and evacuation of sample material and further providing a second pair of ports opposite said first pair of ports, said second pair of ports communicating between said internal passage and said exterior portion of said valve body; a rotor having an exterior surface movably engaging said internal passage and having a pair of opposed measured slots providing intermittent fluid communication between the respective first and second pairs of ports on the internal passage of the valve body and retaining a fixed volume of sample material while the slots are moved from alignment between one pair of ports and the opposite pair of ports; a tension-providing retainer engaging the rotor within the valve body; and a member engaging one of said second pair of ports permitting solely linear fluid communication from said internal passageway of the valve body to a column on an adjacent chromatograph, wherein said member is a thin tube passing through an injector body interface, septum cap, septum and injector body.