Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1991-09-11
1993-06-08
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204299R, G01N 2726, G01N 27447
Patent
active
052175901
ABSTRACT:
A method and apparatus for the injection of a quantitatively defined volume of at least one fluid into a tube or capillary, in particular suitable for capillary electrophoresis systems by immersing at least one end of the tube or capillary in the fluid to be injected in the tube or capillary and generating an overpressure in a space above the surface of the fluid to be injected, wherein said overpressure is generated by means of a syringe device comprising a cylinder and a piston movable in a controlled manner in the cylinder, said cylinder being filled with a suitable gas and being connected via a pressure line to said space above the surface of the fluid to be injected.
REFERENCES:
patent: 4470910 (1984-09-01), Quemerais
patent: 4510058 (1985-04-01), Cais
patent: 4906344 (1990-03-01), Hjerten
patent: 4954253 (1990-04-01), Alexandrov
patent: 4994180 (1991-02-01), Sims
"Evaluation of an Automatic Siphonic Sampler for Capillary Zone Electrophoresis", S. Honda, et al, Journal of Chromatography, 404 (1987) 313-320, Chrom. 19 689, 1987 Elsevier Science Publishers B.V.
"Characterization and Automation of Sample Introduction Methods for Capillary Zone Electrophoresis", D. J. Rose, et al, 1988 American Chemical Society, Anal. Chem. 60 (1988) 642.
Hansen Marinus C.
Lauer Hermanus H.
Logtenberg Frederikus J.
Loth Karel A.
Ooms Jan A.
Lauer Labs B.V.
Niebling John
Starsiak Jr. John S.
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