Glass Bottle HPLC vials are designed with heat resistance and high chemical resistance, making them ideal for holding reagents with acidic, neutral, and alkaline pH levels. Sealed Design Lab vials incorporate a unique screw design for a reliable seal. Silicone septa and PTFE ensure an evaporation-tight closure, suitable for the storage of compound samples in the chemical industry and research laboratories. Easy to Distinguish Amber vials are marked with white printed graduations at 0.5ml increments, providing a large area for sample identification or labeling. Screw Vials feature 2ml HPLC vials with a diameter of 12mm and height of 32mm, compatible with standard autosamplers. Wide Applications Lab vials are perfect for HPLC, LC/MS applications, and high-throughput analysis, guaranteeing dependable results. Sample vials can be utilized with all common automatic stampers designed for thin-neck bottles. Specification: 100PCS Colour: Parent Material: Glass Package Contents: 100 x Autosampler Vial Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3cm.