Patent ID: 7710571
Filing Date: 2010-05-04
Classification: G01N

Abstract:
1. A method of forming a membrane in a spectroscopy system having an operating position comprising: providing an optical element having an optical surface, providing a support block formed with at least one sample well having a center, the support block being disposed on the optical surface thereby defining a substantially vertical rear cell surface having a center, providing a syringe filled with a membrane solution in fluid communication with a needle having a distal end disposed in front of the sample well, aiming the distal end at a point above the center, in a vertical direction, of the rear cell surface, ejecting a steady stream of membrane solution from the needle onto the circular rear cell surface thereby forming a membrane defining at least a portion of a layer under test, the membrane having a substantially uniform thickness that covers substantially the entire rear cell surface, wherein the membrane is formed on the optical surface while the optical surface is located in the operating position of the spectroscopy system.