Introduction A glass pipette in a dropper bottle holds only a small amount of liquid, usually in the range of one to a few millilitres. The exact figure depends on the inner diameter and length of the pipette and on the teat that draws the liquid up. It is not the same as the volume…
Introduction Glass pipettes for dropper bottles are not sold in a single standard size. The right pipette depends mainly on the bottle it goes into, the liquid and how you want to dose it. This guide explains which dimensions matter and how to pick a suitable pipette for a DIN18 (GL18) dropper. What “size” means…
What a dropper pipette is A dropper consists of three parts: a rubber teat, a collar and a glass pipette. The collar holds the assembly in the neck of the bottle, and the teat creates the suction that draws liquid into the pipette. This differs from a laboratory pipette, which is usually operated with a…
Why light matters Some active substances degrade when exposed to light, particularly UV and short-wavelength visible light. The result can be reduced potency or the formation of degradation products. Whether a particular medicine is light-sensitive, and how it should be stored, is determined by its manufacturer. The instructions on the label and in the leaflet…
Short answer A graduated container carries a printed or moulded scale that shows volume. A non-graduated one has no scale and is used for storage and protection only. For dropper packaging, the graduation is usually on the glass pipette rather than on the bottle, so the practical choice is between a graduated and a plain…
Why moisture matters Moisture can degrade some active ingredients through hydrolysis, make tablets soften or crumble, cause powders to cake, and encourage microbial growth in some liquid products. How sensitive a product is depends on its formulation, so the packaging should be chosen according to the product’s stability data and the applicable requirements. Where the…
Introduction Light can speed up the chemical breakdown of some active ingredients. This is called photodegradation. It can reduce potency and, in some formulations, produce unwanted degradation products. Packaging is one of the simplest ways to limit light exposure. This article explains how light-protective bottles work, which materials are used and what to consider when…
Why the closure matters The closure protects the contents from contamination, spills, evaporation and light or air exposure, depending on its design. It also affects how the product is dispensed and who can open it. Closure choice is therefore a packaging decision as well as a usability and safety one. Main closure types Standard screw…
Introduction The closure is one of the most important parts of a pharmaceutical bottle. It protects the contents, affects how easily the bottle is used and can carry safety features. Screw caps and snap caps are the two common closure types, and they work in different ways. This article explains how they differ and what…
Why bottle colour matters Pharmaceutical and other liquid products are often sold in glass bottles. The two most common colours are amber (brown) and clear (colourless). Both are chemically suitable for many products. The main difference is how much light reaches the contents. Amber glass Amber glass absorbs most ultraviolet (UV) light and part of…
AI assistant – answers may contain mistakes. Prices and stock are checked live in the shop.
