100PK Test Tubes, 50ml - Borosilicate 3.3 Glass - 1.2mm Thick Walls, Beaded Rim - Superior Heat & Chemical Durability - 5.9" Tall, 1" Diameter - Eisco Labs

• INDUSTRIAL QUALITY || 50ml (1.7oz) Test Tubes made of high quality, heavy duty, Borosilicate 3.3 glass
• THIN WALL || Uniform wall thickness of 1.2mm provides excellent thermal shock resistance
• BEADED RIM || Chip & crack resistant, fire polished beaded rims
• THERMAL SHOCK RESISTANT || Autoclavable for easy sterilization. Low temperature gradient- can withstand direct flame, high temperatures & thermal shocks
• GREAT FOR PROFESSIONAL LABORATORIES, CLASSROOMS & HOUSEHOLD || 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

Set of 100 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. (Compatible stoppers can be found by searching ASIN: B07CZ1MFVH and B07N6NLLC8).

Autoclavable, with superior chemical durability. Low temperature gradient- can withstand direct flame, high temperatures & thermal shocks. Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C.

Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following 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 with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.