ApplicationNo. 06/875431 filed on 06/17/1986
US Classes:96/103, With programmed, cyclic, or time responsive control means73/23.41, Including sample preparation or sampling73/864.11, With suction applying and liquid discharge means96/106Having system connector or coupling
ExaminersPrimary: Spitzer, Robert
Attorney, Agent or Firm
International ClassesG01N 30/00 (20060101)
G01N 30/24 (20060101)
Foreign Application Priority Data1985-06-20 DE
AbstractA gas chromatograph, very small sample metering apparatus having a double hollow needle that is inserted downward into the sample vial to transfer pneumatically the entire sample quantity, on the order of 1 microliter, from the sample vial, through a transfer capillary with an inside diameter of between 0.1 and 0.15 mm, directly to the cold, temperature-programmable vaporizer. The sample is retained in the vaporizer for later vaporization. While the sample is being vaporized and injected into the gas-chromatographic separation column, the transfer capillary line is backwashed with a flushing solvent which is transferred by a carrier gas through the interconnecting tubular lines.