Amber Glass Bottle, Slim, White Safety Cap & Dropper, 50 ml

The amber glass medicine bottle with a volume of 50 ml is supplied together with a plastic dropper insert and a white cap with an 18/410 neck finish. It is intended for filling liquid cosmetic products that are dispensed drop by drop. Amber glass reduces light exposure and so helps protect light-sensitive contents, for example facial oils, serums with active ingredients or essential oil blends. The dropper insert fitted in the neck releases the contents gradually, which makes precise dispensing easier.

The “Amber glass medicine bottle, tall, white safety cap, 50 ml” kit combines three parts with the same neck type, so they fit together without any further matching. The cap is screwed onto the neck of the medicine bottle with the dropper insert already fitted. The whole kit is declared suitable for contact with cosmetic products.

What it is suitable for

• Facial and hair oils – liquid oils and oil blends applied in small amounts are dispensed through the dropper insert without spilling.
• Low-viscosity serums – water-based and oil-based serums applied in a few drops to the face or the décolleté area.
• Essential oil blends and fragrance blends – dark glass limits the effect of light on the fragrance; we recommend testing in advance how the plastic dropper insert behaves with pure essential oils.
• Tinctures and alcohol extracts for cosmetic use – the dropper insert allows a small amount to be measured into the finished product.
• Samples and test batches – a volume of 50 ml is enough for trial runs before producing a larger quantity.

How the kit works

After the medicine bottle is filled, the dropper insert is pressed into the neck as far as it will go. The contents are then released by inverting or tilting the medicine bottle. The dripping speed depends on the viscosity of the formulation. Liquid oils and aqueous solutions drip smoothly, while thicker serums or oils with a wax content flow slowly, and with these it is worth testing whether the dropper insert is suitable. The cap tightened on the 18/410 neck finish closes the medicine bottle together with the dropper insert, so the kit stays leak-tight when carried in a bag or sent to customers.

Nominal and total volume

The nominal volume of 50 ml is the amount the medicine bottle is designed for in normal filling. The total brimful volume given in the parameters is the physical volume of the glass up to the neck. The difference between the two values forms a reserve for the dropper insert, which is immersed in the contents once it is pressed into the neck. For this reason, fill only to the nominal volume. If the bottle is filled to the brim, the contents overflow when the dropper insert is pressed in and soil the thread, which impairs the tightness of the cap.

Good to know

Before the first filling, we recommend washing the medicine bottle, the dropper insert and the cap, disinfecting them with isopropyl alcohol or ethanol and leaving them to dry completely. Residual water in the glass or in the dropper insert can dilute anhydrous formulations and increases the microbial load in water-based products.

The glass withstands cleaning with hot water, but a sudden change of temperature is not good for it. For this reason, do not fill a cold medicine bottle with a hot formulation, and when sterilising with heat, let it warm up gradually. The dropper insert and the cap are made of plastic, so they are cleaned with warm water and disinfectant, not by boiling.

The kit can be used repeatedly. After use, the dropper insert is removed, and all parts are washed and disinfected. When changing the contents, especially after essential oils or intensely fragrant blends, bear in mind that the plastic parts may retain the fragrance even after washing.

Closures with the same 18/410 neck type and other ready-made combinations of medicine bottle and closure can be found in the Handymade range. For your own combination, we recommend checking the tightness, the dispensing and the behaviour of the packaging with your specific formulation.

After use, the glass is recycled as glass and the plastic parts separately as plastic.

Frequently asked questions