Blue Glass Bottle, White Safety Cap & Dropper, 50 ml

This blue glass bottle with a volume of 50 ml, a plastic dropper insert in the neck and a white cap is used for filling and dispensing liquid cosmetic products drop by drop. Blue glass limits light exposure, so it is particularly suitable for contents that are harmed by light: facial oils, serums, essential oil blends, herbal tinctures or alcohol extracts for external use. The set is declared suitable for contact with cosmetics.

The dropper insert fitted in the neck serves as a safeguard. The contents do not pour out even when the bottle is turned upside down, the liquid comes out one drop at a time, and dispensing stays under control even with small amounts. The white smooth cap with an 18/410 neck finish closes the bottle and protects the contents between uses.

What it is good for

• Oils and oil serums – dispensed drop by drop directly onto the skin or into the palm.
• Essential oil blends – the small volume and coloured glass suit concentrated fragrance blends.
• Tinctures and alcohol extracts – the dropper lets you measure an exact dose into water or into a formulation.
• Samples and test batches – 50 ml is enough for a smaller batch or for a customer sample.

Dispensing and closing

The bottle is filled through the neck with the dropper insert removed. After filling, the dropper insert is pressed back into the neck and the cap is tightened. To dispense, turn the bottle upside down, and the drops flow out by gravity, so there is no need to squeeze anything. Thicker oils, such as castor oil, drip more slowly than light oils or alcohol. Watery contents flow faster, so it is worth dispensing over a dish or over your palm.

Nominal and total volume

The nominal volume of 50 ml is the amount the bottle is designed for in normal filling. The total volume to the brim is larger and you can find it in the parameters. The difference between the two values is a reserve for the dropper insert, which takes up part of the neck, and for the expansion of the contents with changes in temperature. Fill up to the nominal volume. A bottle filled to the brim would overflow when the dropper insert is pushed in.

Good to know

The glass withstands cleaning with hot water and disinfection with alcohol, but it should not be exposed to sudden changes in temperature. The plastic dropper insert and the cap are cleaned with lukewarm water. We do not recommend prolonged soaking in concentrated essential oils or solvents without a prior test. With strongly aromatic contents, it is better to replace the dropper insert and the cap after emptying, because plastic can retain the scent.

The bottle can be reused. After it is emptied, it is taken apart into three pieces, washed thoroughly, disinfected and left to dry. After several cycles the dropper insert may become loose in the neck, and in that case it needs to be replaced. For recycling, the glass is handed in separately, while the dropper insert and the cap go with plastics.

Frequently asked questions