Short thread vials have a wide opening (6.0 mm ID) with a unique thread design that allows you to screw on the caps and still use them in a robotic autosampler. The thread sits much higher on the vial allowing space between the bottom of the thread and the shoulder of the vial.
Order salinized vials to minimize adsorption of polar compounds, including amino acids, proteins, and phenols to the inner surface of the vial. All vials made from 1st hydrolytic class 51 expansion glass.
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