Product Features: 1. Glass borosilicate glass tubes with high quality, low free ion content, with a low thermal expansion coefficient and a very high chemical resistance 2. unique thread design ensures consistency seal 3. Strict quality assurance provides consistency from batch to batch size between 4 for Agilent, Shimadzu, Waters, CTC / Leap other companies autosampler Products Brand: Jie Dao Num:? JD-V8001B (A representative of 3.0 material, B for 6.8 material) Capacity: 2ml temperature: -60-200 ℃ Material: Glass hydrolysis (hydrolytic class 1 glass) Color:? Transparent Packaging: Packaging shrink plastic boxes, packing two cardboard boxes ?? absolute guarantee of product specifications Cleanliness : 11.6 * 32mm?