PURPOSE: To count insoluble particles directly in relatively high precision by casting a sample of an aqueous solution of a carboxymethyl cellulose ether alkaline salt into a transparent container to form a film, picking up the image and counting insoluble particles in the static image.
CONSTITUTION: The concentration of an aqueous solution of a carboxymethyl cellulose ether alkanine salt is adjusted to 0.01-1.0wt.%, and an electrolyte in an amount to give a concentration of desirably 5-30% and a dye are added to the solution to prepare a sample aqueous solution. This solution is packed into a sample tube 1, and is quantitatively poured with a pump 3 into a flat transparent container 4 through a passage 2 to cast the solution to form a film of an even thickness of 5-200μm. The image of the cast liquid film is continuously picked up with an image pickup device 5 to obtain static images. A single or plural static images are displayed on a cathode-ray tube display 7, the insoluble particles are counted directly or with an image processing means 6, and the results of counting is shown on the display 7.
TAKAHASHI MICHIKO
TAKAMURA YASUYUKI
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