Apparatus and process for measuring the colloidal stability of liquids
US4547070A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1981 |
| Grant date | Oct 15, 1985 |
| Priority date | — |
| Expiry date | Mar 24, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/51
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.