100PK Test Tubes, 12mL, 16x100mm - Rimless - 1.2mm Wall - Borosilicate 3.3 Glass

• 12mL (0.4oz) Test Tubes made of high quality, heavy duty, borosilicate 3.3 glass
• Uniform wall thickness of 1.2mm provides excellent thermal shock resistance
• Flat, fire polished rims make these tubes ideal for culture testing
• 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

Pack of 100 rimless Test Tubes made of high quality borosilicate 3.3 Glass. 12mL capacity. Tubes feature fire polished, flat edges with uniform, 1.2mm walls. Each tube measures 100mm (4") tall, with an outer diameter of 16mm (0.6").

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.