9 mm Wide Mouth Screw Thread HPLC Vials: Caps are made of high quality polyproylene to exact manufacturing tolerances and lined in a controlled manufacturing environment. Available cap colors include yellow, red,green and blue. Our septa use only the highest quality materials to ensure proper function and can be pre-slit to ease needle penetration. Designed for single injection and/or short sample cycles, particularly for LC applications. Absence of elastomer layer reduces potential for contamination.
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