Rapid CH0718G Test Tubes, medium wall, cap. 50ml, 150x24mm, boro. Glass c/w Rim Set of 50 test tubes made of high quality Borosilicate 3.3 Glass. 50ml capacity. Tubes feature uniform, 1.2mm walls and beaded rims. Each tube measures 5.9" (150mm) tall, with an outer diameter of 0.95" (24mm). Inner diameter measures 22.8mm. Accommodates stoppers with a bottom diameter of 20-21mm & top diameter of 24-26mm. Autoclavable, with superior chemical durability. Low temperature gradient- can withstand direct flame, high temperatures & thermal shocks. Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C. * 15ml (0.16oz) (0.5oz) (0.5oz) * Test Tubes made of high quality, heavy duty, Borosilicate 3.3 glass * Uniform wall thickness of 1.2mm provides excellent thermal shock resistance * Chip & crack resistant, fire polished beaded rims * Autoclavable for easy sterilization. * Low temperature gradient- can withstand direct flame, high temperatures & thermal shocks * Superior chemical durability and heat tolerance. * Designed for use in professional laboratories, but is an ideal choice for science classrooms and household use. * Great for organization and storage of spices & craft supplies https://elecena.pl/product/28454604/rapid-ch0718g-test-tubes-medium-wall-cap-50ml-150x24mm-boro-glass-c-w-rim 2025-04-17 https://elecena.pl/product/28454604/rapid-ch0718g-test-tubes-medium-wall-cap-50ml-150x24mm-boro-glass-c-w-rim 2025-12-31