Size: 12mm in diameter, 32mm in height, 2ml of small bottle, 9mm threaded thread automatic sample clearance laboratory small bottle is made of clear 1, Class A borosilicate glass, with writing tags for sample recognition. Amber small bottle material: 9mm thread automatic samplem Amber Bottle small bottle is made of clear 1, Class A borosilicate glass, with writing tags for sample logo, which meets international hydrolysis extraction standards. ASTM E-438 Type 1 Class A Class A A-Class A borosilicate glass meets the requirements of the United States The sealing design and reusable use: the polypropylene screw cover with accuracy of the septum provides sealing of anti -evaporation. The double layers include silicon and PTFE. Organic diaphragm with multiple s. Organic sample PTFE lining screw cover. Easy to distinguish: Patch for sample identification or labels. Short -range covers and small bottles need less bend to make sealing, saving time, especially considering the frequency of opening and turning off the small bottle, and how many samples do you have. Easy to use: The opening of the 9-425 screw top bottle is 40 % larger than the small bottle with a standard narrow opening. The 2ml HPLC small bottle with a unique thread design can ensure consistent sealing parts and can be reused instead of volatility. Color: Brown/ parent Material: glass Package Contents: 100 x 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.