Ultra-thin membrane for chemical analyzer and related method for forming membrane

摘要

A method for forming an ultra-thin membrane for use in a chemical analyzer such as a mass spectrometer includes the step of applying a sacrificial blocking layer onto a porous substrate, applying a semi-permeable membrane layer onto the sacrificial blocking layer, and removing the sacrificial blocking layer following cure of the membrane layer. In a preferred version, at least one of the blocking layer and the membrane layer are applied to the porous support by means of spin coating, though other deposition techniques can be employed.

主权项

1. A method for forming an ultra-thin membrane for use in an inlet portion of a chemical analyzer, said method comprising the steps of:
applying a first layer onto a porous substrate; applying a second layer onto said first layer wherein the pores of said substrate are not filled by said second layer; and removing said first layer wherein said first layer is a sacrificial layer and said second layer is a semi-permeable membrane layer.