The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 1994
Filed:
Dec. 29, 1992
Robert A Bredeweg, Midland, MI (US);
Engin D Yalvac, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
Apparatus for stop flow membrane probe analysis which apparatus is especially suitable for on-line analysis, the apparatus necessarily including five parts. The first part is a reservoir for containing an extractant. The second part is a flow control unit, being a pump or valve, the flow control unit connected to the reservoir, the flow control unit being of the type that can be turned on and off. The third part is a flow through membrane probe, the flow through membrane probe being connected to the flow control unit. The fourth part is a detector, the detector being connected to the flow through membrane probe. The fifth part is a switch for turning the flow control unit on and off so that the apparatus can be used for stop flow analysis. Preferably, the detector is also connected with the reservoir so that the extractant flowing through the probe and detector can be. recycled back to the reservoir. The probe is immersed into a process stream. A component of interest of the process stream permeates across the membrane into the extractant to be detected by the detector.