Rimmed Borosilicate Glass Test Tubes, Pack of 48

Details

Here is the corrected text: This set of 48 test tubes is made from high-quality Borosilicate 3.3 glass, each with a capacity of 20ml. The tubes feature uniform 1.2mm walls and beaded rims. Each tube measures 5.9 inches (150mm) in height, with an outer diameter of 0.63 inches (16mm). The inner diameter measures 14.8mm. They accommodate stoppers with a bottom diameter of 13-14mm and a top diameter of 17-18mm. (Compatible stoppers can be found by searching ASIN: B07CZ44CL8 and B013TMXI2C.) These tubes are autoclavable, with superior chemical durability and a low temperature gradient, allowing them to withstand direct flame, high temperatures, and thermal shocks. Eisco Labs' Borosilicate glass has the following heat tolerances: strain point -515°C, annealing point 565°C, and softening point 820°C. Eisco Labs proudly manufactures its own products using state-of-the-art equipment and adhering to the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured using only the highest-grade raw materials, according to international quality standards, to ensure that they can withstand use in even the toughest laboratory environments.