Wheaton LDPE (Low Density Polyethylene) Dropping Bottles are available in natural or white to protect UV light sensitive products. The controlled dropping tip is easy to attach and remove from the bottle. Dropping bottles, tips and caps are manufactured to strict quality control standards to ensure the best product for your application. Many different colors and sizes are available to meet your requirements. Dropper Bottles, Tips and Caps can be purchased separately.Dispensing Characteristics: Controlled dropper tips are tips which have their orifices pierced during a secondary operation. A .020 inch needle is used to pierce the tips. The general tolerance for the hole size in a pierced part is +/- 0.003 inches. The average drop size for stock, controlled round tips (8 mm – 20 mm) is 41μL +/- 5μL. The Wheaton line of dropper bottles, tips and caps offer quality and versatility in a variety of dispensing applications.