PYREX® Glass Test Tube, 20x150mm, pk/6
These test tubes are annealed, resistant to heat and chemically stable. Plain rims are fire-polished. Each tube has a white marking spot. Sold in a set of 6. Specifications: Component Materials: Type I Class A - Low-Expansion Borosilicate Glass, per ASTM E438 Capacity: 34mL Dimensions: 20mm OD x 150mm High, 1.0-1.2 mm Wall Autoclaving: Will withstand repeated standard autoclave cycles of 121°C at 15 psi for 15 minutes. Heating / Cooling: This product is designed for heating by hot plate, flame, oven, microwave or heating mantles. In normal service it can be heated many times to 230°C. It can be heated one time to 490°C in extreme service. This product can be cooled to -230°C. DO NOT plunge product directly into a liquid coolant. Place the product in the vapor phase of the liquified gasses for slow cooling prior to immersion in the coolant. Vacuum / Pressure: Not designed for and is not rated for vacuum or pressure applications. Sterilization: Shipped Not Sterile TSE/BSE: Materials of animal origin are not used in the manufacture of this product.