The pharmaceutical bottle dropper developed over the nineteenth and twentieth centuries from a simple idea: a glass tube with a flexible bulb that draws up and releases small amounts of liquid. It grew into a standard closure for medicines, tinctures and eye preparations once glassmaking, rubber technology and pharmacy practice had all reached a certain…
Pharmaceutical bottles are brown, or more precisely amber, because the coloured glass absorbs a large part of ultraviolet and short-wavelength visible light, which can break down light-sensitive ingredients. Amber glass does not make a product last forever, but it slows photodegradation and so helps keep the contents closer to their intended quality for longer. How…
A dropper is used to measure out and dispense a liquid in small, controlled amounts, one drop at a time. It does this by combining a rubber or elastomer teat, which creates suction when squeezed, with a narrow glass or plastic pipette that holds the liquid until it is released. Droppers are used in cosmetics,…
Droppers come in sizes that match the bottle they fit, and for standard dropper bottles the key size is the DIN18 (GL18) thread. A DIN18 dropper fits DIN18 bottles of 5, 10, 15, 20, 30, 50 and 100 ml, while the glass pipette inside is cut to a length that suits the bottle height. Thread…
AI assistant – answers may contain mistakes. Prices and stock are checked live in the shop.
