Patent ID: 7265844

Claim:
A horizontal surface plasmon resonance instrument for use with a sample cell having a metallic film with probe molecules attached to a first side of the film exposable to material flow across the first side of the film and having a transparent support attached to a second side of the film opposite the first side, the horizontal surface plasmon resonance instrument comprising: a support frame having: a) an entrance providing a path for receiving an analyzing light beam along a first fixed axis; b) an exit for providing a path for transmitting a modified light beam along a second fixed axis; and a holder for supporting the sample cell with the metallic film in a horizontal orientation; an optical assembly for adjustably directing the analyzing light beam received along the first fixed axis at one of a range of incident angles at the second side of a film of a sample cell in the holder and for directing reflected light received at a corresponding one of a range of reflection angles from the second side of the film back along the second fixed axis.