These test tubes are made of high-quality, heavy-duty borosilicate glass with a thin, uniform wall thickness that provides excellent thermal shock resistance. They are designed for use in professional laboratories and science classrooms, as well as household applications like garage and homeschool labs and storage of spices and craft supplies.
- 3.3 Borosilicate glass
- Chip- & crack-resistant, fire-polished beaded rim
- Can withstand direct flame, high temperatures & thermal shocks
- Superior chemical resistance
- Dimensions: 0.79” OD x 18.8mm ID x 5.9” Hgt.
- Thickness: 1.2mm
- Fits stopper with 15-16mm bottom dia. x 20-24mm top dia.
- Autoclavable
- Temperature range: -515°C to 565°C
- Sold in full cases only