Stopped flow spectrophotometer mixer
US5098186A · kind A · utility
Inventor
Key dates
| Filing date | Oct 12, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Oct 12, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/122
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improvement in rapid mixers for stopped flow spectrophotometers is disclosed. This improvement involves the dispersion of one solution from the bore of a disperser through notches into a flowing sheath of a second solution. The dispersed mixture is then mixed by passage through a mixer made up of a series of mixing rings with lands and grooves. The lands and grooves of adjoining rings are aligned so grooves are adjacent to lands, thus providing maximum mixing. The ratio of volumes of solutions mixed may vary from 1:1 to 40:1 by varying the number and size of notches in the end of the disperser tube. The viscosity ratio of the solutions mixed may vary from 1:1 to 100:1. Complete (greater than 99%) mixing occurs in less than one millisecond.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.