Apparatus for automatically transferring small quantities of liq

Details Apparatus for automatically transferring small quantities of liq Apparatus for automatically transferring small quantities of liq

1986-06-17

1987-11-03

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55386, 73 231, 7386411, B01D 1508

Patent

active

047041412

ABSTRACT:
A 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.

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