Agar & Petri DishesBiology SuppliesAnimalsDissectionHuman Body & AnatomyInsects
5mm borosilicate glass tubes fit in all rubber stoppers & attach to 4.8 mm plastic or rubber tubing.
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.
Note: HST has not tested this product for compliance with food safe requirements.