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US 3,942,897 AGranted
Method and apparatus for detecting solid substances contained in liquid
AssigneeEisai Co., Ltd.
InventorsToshio Takahashi, Ryosaku Tagaya, Toshiyasu Ehara
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AssigneeEisai Co., Ltd.
InventorsToshio Takahashi, Ryosaku Tagaya, Toshiyasu Ehara
Estimating the term…
Method and apparatus for detecting and measuring solid alien substance(s), which may adversely exist in a liquid contained in a transparent container, are provided. Light is applied to the container as it is rapidly rotated and then suddenly stopped to cause floating or suspending the solid substance(s) in the liquid. The light passed through the liquid or passed through light and also the light reflected from the solid substance(s) are separately captured and their individual intensities are measured by means of photometry. The method and apparatus may be utilized for sorting out the transparent liquid from that contaminated with solid impurity, depending upon the intensity(s) of the captured light or lights.
A method for photometric determination of size and/or amount of solid matter that might be present as an impurity in a transparent liquid held in a sealed transparent vessel, comprising the steps of rapidly rotating the vessel around a vertical axis and then suddenly stopping the rotation to cause the solid matter to be suspended in the liquid;
An apparatus for the photometric determination of size and/or amount of solid matter that might be present as an impurity in a transparent liquid held in a sealed transparent vessel, comprising means for detachably securing the vessel;
Dependencies are inferred from the claim text.