The GERSTEL Replacement Needle is designed for 1.0 and 2.5 mL TriStar Headspace Syringes, offering a wide bore for enhanced analysis. Crafted from rugged, inert materials, it minimizes carry-over and resists various solvents, ensuring long-lasting, gas-tight performance crucial in chromatographic applications. With two needles per pack, it provides an efficient solution for demanding laboratory needs.