dropper pipette

A dropper pipette is the glass tube component of a dropper assembly, used to draw up and release measured amounts of serum, oil, or other low-viscosity formulas. Selection centers on pipette length relative to bottle height, tube diameter, tip structure such as straight or rounded, and the glass quality that affects clarity and drop behavior. The pipette works together with the collar, inner ring, and bulb, so compatibility with the chosen closure and bottle neck should be verified through physical samples. Custom lengths and tip forms are common when a project needs a specific dose or bottle proportion.