Patent ID: 6245295
Filing Date: 2001-06-12
Classification: B01L,G01N,Y10T

Abstract:
A sample testing apparatus comprising:a solid body having a portion thereof defining a well for containing a reagent and a test sample to be tested; anda membrane affixed to said solid body in a manner to cover said well and thereby close said well off from the environment and thereby convert said well into a closed reaction chamber;wherein said membrane provides a non-venting, but high oxygen transmissible and permeable barrier between said reagent and fluid sample in said well and an atmosphere external of said closed reaction chamber, and further provides a liquid and solid-phase impermeable barrier for said closed reaction chamber preventing solid or liquid-borne contaminants from entering said closed reaction chamber,and wherein said membrane has an oxygen permeability relative value at 1 mils thickness substantially greater than 1,500 cc/100 in.sup.2 /24 hours at 25 degrees C.