Why cleaning matters Dropper bottles are used for essential oils, tinctures, cosmetic serums and similar liquids. Residue left in the bottle or pipette can change the dose per drop, block the pipette tip, carry smells into the next product or allow microbes to grow. Cleaning is useful for personal reuse. It does not make a…
Filling a dropper bottle is simple, but a few details decide whether the result is clean, leak-free and easy to dose. This guide covers the steps for glass dropper bottles with an assembled dropper (teat, collar and pipette), such as DIN18 (GL18) bottles, and the mistakes that cause most problems. Before you start Bottle and…
Introduction Dropper bottles store and dispense small amounts of liquid. They are used for essential oils, tinctures, cosmetic serums, oral drops and other liquids that are applied by the drop. A typical dropper consists of a glass pipette, a rubber or elastomer teat and a collar that fits the bottle neck. This article explains how…
Short answer Standard dropper teats are not designed for contact with acetone. Acetone is a strong solvent, and many common elastomers swell, soften, harden or crack when exposed to it. The most reliable prevention is to choose a compatible material and to test it with your own liquid. Coatings and handling tricks are only a…
Introduction Hydrogen peroxide is a strong oxidiser. Elastomer teats that are in prolonged contact with it, or with its vapour, can harden, crack, swell or turn sticky. This article explains what drives that damage and what you can do to limit it. Why hydrogen peroxide damages teats Oxidisers attack the polymer chains in many elastomers….
Short answer A used dropper teat is a small elastomer part and is normally not accepted in kerbside recycling. In most cases it goes into general (residual) waste. Rules differ between countries and municipalities, so check your local waste guidelines. Before you throw it away Empty the dropper: use up the contents where possible. Do…
Why teat cleaning matters The teat is the part of a pipette dropper that you squeeze to draw liquid into the glass pipette. It is in contact with the pipette and often with the contents, so residue on it can affect the next fill. This guide covers how to clean teats for DIN18 (GL18) droppers…
Short answer Sometimes. Whether a teat can be sterilised depends on its material, the method used and how many times the process is repeated. Rubber and elastomer teats differ in how well they tolerate heat, steam and chemicals, so there is no single method that suits every teat. The material specification or the supplier’s guidance…
Introduction A glass pipette for droppers and a graduated cylinder both handle liquids, but they are designed for different jobs. The pipette is part of a dispensing closure that takes liquid from a bottle and releases it in drops or small doses. The cylinder is a stand-alone vessel for measuring a volume. This article compares…
Why air bubbles matter In a dropper, the glass pipette draws liquid up when you release the teat. If air gets in, the pipette holds less liquid than it appears to, and the dose is less accurate. With a graduated pipette, bubbles also make the marking harder to read. Most bubbles come from technique, but…
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