Chromatography Forum

Hi All

We have to make manual injections of gaseous samples onto GCs from time to time. Automation is not practical in this case.

I prefer the side-port point style 5 for manual injections of gases onto GCs and a 500uL 1700 series syringe with the "SsampleLock" option.

Point style 2 (bent bevel) is the traditional option I understand. I realize it shoudl be better for liquid samples.

Do you pre-pressurize the sample as recommended by Hamilton in their SampleLock Syringe Guide? We have had mixed results with that.

anyone, anyone?

Does anyone have any advice experience on your manual injection syringe preferences and techiques?

I donlt have any strong preferences, and I don't pressurize or use a sample lok. I might use a sample lok if I had to transport a sample in the syringe, or if there was a chance that the syringe would be exposed to different temperatures between loading and injection.