Apparatus and process for measuring the colloidal stability of l

Optics: measuring and testing – By particle light scattering – With photocell detection

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356 36, G01N 2100

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active

045470707

ABSTRACT:
Apparatus for measuring the colloidal stability of liquids comprising a sample-holder containing a sample of the liquid the turbidity of which is to be measured, a cooling tank containing the sample-holder and associated with a cooling unit, a laser light source of appropriate wavelength, a photopile for measuring the light flux diffused through the sample to be checked, a reference photopile for permanently controlling the exciting beam, a semitransparent mirror reflecting a part of the light beam in the direction of the reference photopile, a device for absorbing the nondiffused light and a logic system associated with a microprocessor for calculating the value of the turbidity of the sample.

REFERENCES:
patent: 3561825 (1971-02-01), Ried, Jr. et al.
patent: 3617222 (1921-11-01), Matte
patent: 4043669 (1977-08-01), Gehatia et al.
patent: 4047815 (1977-09-01), Sedlacek
patent: 4053229 (1977-10-01), McCluney
Korableva et al., "Installation for the Measurement of Scattering and Depolarization of Light by a Liquid", Pribory i Tekhnika Eksperimenta, No. 4, pp. 223-225, 8/78.

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