These dual gauge 23s-26s (tapered) needle syringes provide the durability of a 23s-gauge needle and the ability of a 26s-gauge needle to perform split/splitless and on-column injections. Hamilton′s Gastight® syringe is to be used for gas or liquid injection. This syringe has a glass barrel with a PTFE-tipped plunger seal that creates a leak-free seal. The seal wipes the interior of the syringe barrel free of sample. All have AS point style.