Apparatus and method of fluid sample analysis
US4049381A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Mar 23, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/118339
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method for obtaining a concentration gradient in a liquid sample analyzer including flowing a first liquid in a stream to fill a conduit, and continuing the flow of the first liquid along the conduit subsequent to the filling step. Combined with these steps is the step of changing the concentration of the first liquid by removing from the stream a predetermined varying volume of the first liquid and adding to the stream a predetermined proportional varying volume of a second liquid. There is also provided a method of serial dilutions of a liquid stream in a conduit by removal of a portion of the stream prior to each diluent addition for the purpose of conserving diluents which may be reagents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.