These Dropping Bottles with Ground In Pipette are made from BOROSILICATE 3.3 glass and have precise pipettes to enable accurate and measured liquid dispensing. This is essential for conducting various scientific experiments. The ground-in pipette and interchangeable stopper and rubber teat ensure reliable and exact droplet delivery, guaranteeing accuracy in reagent or liquid addition. Designed for use in chemistry, biology, and pharmaceutical research, these bottles provide scientists with the capacity to precisely administer liquids for precise and regulated experiments.