Amber Glass Tube for Lab Chemical Storage

7.0 Amber Brown Glass Tube   This 7.0 standard brown medicinal glass tube is a high-quality low borosilicate substrate that is widely used in various fields. It is widely used in medical pre filled syringes, essential oil packaging, laboratory chemical reagent storage, and other scenarios. With stable physical and chemical properties and excellent light avoidance protection capabilities, it is highly recognized by overseas medical, beauty, and chemical research industries. The product adopts a mature 7.0 process ratio, with a stable thermal expansion coefficient of 7.0 × 10 ⁻⁶/℃, refined by a 510 ℃ high-temperature annealing process. The texture of the tube body is uniform and dense, and the tube wall is flat without bubbles, impurities, or concave convex defects. The structure has high strength and moderate toughness, and can withstand complex working conditions such as high temperature processing, low temperature storage, and temperature difference alternation. It is not easy to cra…