Cleaning the Syringe

First draw distilled water (or other appropriate solvent, as directed by your instructor) into the syringe and expel it onto a paper towel. Wipe the tip of the needle with a laboratory tissue. Next rinse the inside of the syringe with the sample to be injected into the gas chromatograph. Draw the sample solution into the syringe and expel it onto the paper towel. Again, wipe the needle with a laboratory tissue. Rinse the syringe several times.