Test apparatus for measuring concentration of test substance in liquid
US5320734A · kind A · utility
3Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1992 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | Oct 29, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/4875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A test apparatus for measuring concentration of test solution, in which a thin sheet having a plurality of through holes and diffusion-limiting membranes to cover corresponding through hole, is movably installed, and one or two openings for deposition and a concentration measuring section are disposed in a thin sheet moving direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.