5mm soda glass tubes fit in all rubber stoppers & attach to 4.8 mm plastic or rubber tubing. Easily cut and bent with heat.
This tubing fits very tightly in #3 and smaller stoppers. Use Vaseline or cooking oil to help insert the tubing into the stopper, holding the tubing with a cloth to protect your hand if it breaks.
You can easily make a bend in a 5mm glass tube by heating the tube in a candle or alcohol burner flame until the glass softens. Then carefully bend the tube to the desired shape and hold it in that position for a few seconds until the glass hardens again. Be sure to heat the glass tube over a section about 1-1/2' long to avoid crimping the tube when you bend it.
Note: HST has not tested this product for compliance with food safe requirements.
NOTE: Actual product may vary from the one pictured due to differences in suppliers.
MORE INFORMATION BOX
My Science Perks is FREE! Just place your order while logged in to your Home Science Tools account and you'll automatically earn up to 6% back when your order ships!Learn More