Plastic dropper inner plug offered by Dhiren Plastic Industry is a small plastic or rubber stopper, used for sealing the opening of a dropper bottle or dropper vessel. This is apt for both plastic bottles and glass bottles so as to dispense the liquids. It is quite a safer alternative to dropper pipettes, which can seal the opening of a dropper bottle. It can fit tightly inside the neck of the bottle and ensure that it can prevent leakage or dropping out of liquid.