Multipurpose stirring rods featuring dual button ends and a 6 mm (0.25" ) diameter, these borosilicate glass stirring rods offer precise stirring for laboratory or home use, ideal for stirring, scooping, circulating and crushing.

• Stirring rods are made of high quality, heavy duty Borosilicate 3.3 glass
• Resistant to chemicals and high temperatures
• Autoclavable, with superior chemical durability
• Each button end measures 10 mm (0.4") in diameter
• Designed for use in professional laboratories, also an ideal choice for science classrooms

Low temperature gradient- can withstand high temperatures and thermal shocks. Eisco Borosilicate glass has the following heat tolerances: Strain point 515 °C , annealing point 565 °C and softening point 820 °C.