J&w Scientific Incorporated

Rand G Jenkins

Norman W Wohlers

Precision bore fused silica tubing with tapered section

An apparatus and method for injecting samples into capillary-type gas chromatographic columns allows a portion of the column to be withdrawn from the chromatograph oven prior to injection. The sample is injected into the withdrawn portion of the column which is then inserted back into the oven to initiate volatilization. The apparatus includes a syringe holder which is attached to the inlet end of the column and a collapsible support mechanism for extending the syringe holder away from the chromatograph oven. The sample is injected into the column while the support is extended away from the oven. After the injection is completed, the support is collapsed causing the portion of the column carrying the sample to be abruptly introduced into the oven.

Growing community of inventors

Fair Oaks, CA, United States of America

Rand G Jenkins