Key Features
- Precision Glass Dropper for Accurate Dosing
- Compatible with 18-400 Boston Round Bottles
- Smooth Rubber Bulb for Controlled Dispensing
- Bulk Supply with Stable Quality Control

Droppers · 18-400
This 18mm 18-400 black glass dropper is designed for 1/2 oz Boston round bottles, providing precise and controlled liquid dispensing for a wide range of applications. As a reliable bulk supplier of glass droppers, we offer consistent quality, stable supply, and compatibility with industry-standard packaging.
Factory Supply
For dropper cap sourcing, buyers usually need stable neck compatibility, smooth bulb rebound, clean glass pipettes, and repeatable dosing performance across bulk orders. This 18mm 18-400 black glass dropper for 1/2 oz boston bottles is listed with 18-400 details and 1/2 oz Boston round bottles so purchasing teams can check fit before requesting samples. Shunyu Packaging can coordinate Glass, Black, decoration work, sample confirmation, and production packing for overseas packaging projects.