Method of measuring the turbidity of gas-containing liquid mediums with microorganisms
Patent 4021120 Issued on May 3, 1977. Estimated Expiration Date: 
May 3, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 3, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3531209 3699348 3714445 3781116 InventorsAssigneeApplicationNo. 05/641186 filed on 12/16/1975US Classes:356/442, With light detector250/573, Fluent material in optical path356/246, Fluid containers (e.g., cells or cuvettes)435/34, Determining presence or kind of micro-organism; use of selective media435/39, Quantitative determination435/808OPTICAL SENSING APPARATUSExaminersPrimary: McGraw, Vincent P.Attorney, Agent or FirmForeign Application Priority Data1974-03-18 CHAbstractFrom a vessel in which micro-organisms grow in a liquid medium containing gas bubbles, a sample is withdrawn into an exterior measuring chamber by means of suction. Gas bubbles are allowed to escape from the sample and thereafter the opacity or turbidity of the sample is measured by passing a light beam through it.Field of SearchFluid containers (e.g., cells or cuvettes) |
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