Patent · US Expired

Analytical apparatus

US4201643A · kind A · utility

1Cited by
9References
5Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 29, 1978
Grant dateMay 6, 1980
Priority date
Expiry dateMar 29, 1998

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC02F2201/46115
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A method and apparatus for monitoring low concentrations of certain ions present in a flowing fluid is described in which an isokinetic sample is passed through an electro-separative cell wherein, under the influence of an applied electrical field microgram quantities of the ionic species are quantitatively transferred through a microporous filter membrane. The membrane has a pore size related to cell efficiency.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.