Patent ID: 7736590
Filing Date: 2010-06-15
Classification: G01N

Abstract:
1. A hermetically sealed container oxygen content measurement method, which detects fluorescent light generated from fluorescent substance on the tip of a probe, uses a fluorescent oxygen concentration meter to measure the oxygen content around said fluorescent substance based on the results of that detection, and measures the oxygen content within a hermetically sealed container filled with fluid, comprising the steps of: piercing said container using a hollow needle with the interior space closed off from the outside and the tip of said hollow needle removed, and making said interior space continuous with the headspace within said container; inserting said probe through said hollow needle into said container interior; positioning said fluorescent material in the headspace within said container, and measuring the oxygen concentration of said headspace; and inserting said probe further so that said fluorescent material is submerged in the fluid inside said container, and measuring the dissolved oxygen concentration inside said fluid.