[Durable glass bottle] HPLC small bottle has heat resistance and high chemical resistance, suitable for reagents that accommodate acid, neutral and alkaline pH [Sealing Design] The small bottle of the laboratory adopts a unique screw design to ensure consistent sealing. Silicone diaphragm and polytetrafluoroethylene provide protection against evaporation and ensure secure sealing for compound sample storage in the chemical industry and research laboratory [Easy to distinguish] Bottle has a white scale with 0.5 ml increments, and includes a writing area for sample identification or marking [Spiral Bottle] Our 2ml HPLC small bottle has a diameter of 12mm and a height of 32mm. It is suitable for standard autosamplers [Extensive application] Laboratory small bottles are suitable for HPLC, LC/MS applications and high-throughput analysis to obtain reliable results. Sample bottle can be used for automatic sampling with all common narrow-necked vials Color: brown 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 appear slightly different from the real thing. Measurement may have an error of +/- 1-3 cm