Eisco Labs - Test Tubes, 15mL, Heavy Wall Beaded Rim Glass Test Tube - Borosilicate Glass Tube, Durable Lab Glassware for Scientific Research Experiments, Pack of 100

Heavy Walled Test Tubes, 15mL Capacity, Pack of 100Test tubes feature uniform 2mm walls and beaded rims. 5.9" (150mm) tall with an outer diameter of 0.6" (16mm) and inner diameter of 0.47” (12mm). Superior heat and chemical durability. Eisco Labs Borosilicate glass heat tolerances: Strain Point 515°C | Annealing Point 565°C | Softening Point 820°C

• LAB GLASS || 15mL heavy-walled test tube ideal for centrifugation, boiling, and open flame reactions due to its durability and resistance to thermal shock.
• INDUSTRIAL STRENGTH || 15mL (0.5oz) heavy-wall test tubes made of high quality, borosilicate 3.3 glass. Autoclavable for easy sterilization.
• MULTI-PURPOSE || Designed for use in professional laboratories, but is an ideal choice for science classrooms, plant propagation, & home use.
• HEAVY WALL || Uniform heavy wall thickness of 2mm provides excellent thermal shock resistance, strength, and durability.
• BEADED RIM || Chip and crack resistant. Beaded rims are fire polished to enhance durability, safety, and usability.