Process for injecting a minute volume of a solution and an appar

Details Process for injecting a minute volume of a solution and an appar Process for injecting a minute volume of a solution and an appar

1986-10-14

1989-03-07

Richman, Barry S.

Chemistry: analytical and immunological testing

Including sample preparation

Volumetric liquid transfer

422 82, 422100, 222309, 222319, 222335, 222373, 222209, 222378, 222399, 2224005, G01N 114

Patent

active

048106593

ABSTRACT:
Process for injecting a minute volume of a solution from a nozzle device by positive pressure applied from a source of compressed air with or without positive pressure applied in parallel from a cylinder device, comprising applying the positive pressure from the compressed air source at least in a final period of injection. The process enables in injecting minute volumes of solution to remarkably decrease the injection error due to a small fraction of solution remaining at the lower end of the nozzle and can be applied to advantage to those apparatus for analyses and measurements which strictly require precision in injection.

REFERENCES:
patent: 3672545 (1972-06-01), Marand
patent: 3795349 (1974-03-01), Schetinin et al.
patent: 3832135 (1974-08-01), Drozdowski et al.
patent: 4088446 (1978-05-01), Huber et al.

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