Glass Bottle Blue, Glossy Silver Dropper, 15 ml

Blue glass bottle with dropper, 15 ml

The blue glass bottle with a 15 ml volume and a silver glossy dropper is designed for small volumes that are dispensed drop by drop: facial serums, oil blends for the face, diluted essential oils or samples that need precise dispensing. The set comes complete, and the bottle and dropper share the same neck finish, so they fit together without trial and error.

Blue glass filters part of the light and helps protect contents that are sensitive to oxidation, for example oils, serums with vitamins or blends with essential oils. You can still see the level through the glass, so you know how much is left. The glossy silver collar of the dropper gives the small pack a coherent look that holds up well in a gift set.

What the set is suited for

• Facial and hair serums – water-based and oil-based serums with active ingredients, where a few drops are enough for one use.
• Oil blends – facial oils, cuticle oils or beard oils that are dispensed drop by drop.
• Diluted essential oils and aromatherapy blends – for adding drops to a diffuser, the bath or a carrier oil.
• Samples and test batches – the small volume lets you try out a recipe or hand out samples to customers without wasting raw material.

How the dropper works

The dropper consists of a glass tube, a silicone bulb for drawing up liquid, an inner plastic part with a thread and a metal collar in a silver glossy finish. Pressing the bulb draws the liquid in, and releasing it dispenses the liquid drop by drop.

The size of a drop depends on the viscosity and surface tension of the liquid, so it differs between formulations. Thick oils or serums with a higher proportion of thickener are drawn up more slowly. With thicker formulations, we recommend testing whether the contents can be drawn up through the tube comfortably.

Nominal and total volume

The nominal volume is the amount the bottle is intended for under normal filling. The total brimful volume is the physical volume up to the neck and you will find it in the parameters. The difference between them is a reserve for the glass tube of the dropper, which takes up part of the volume once it is screwed in, and for the expansion of the contents when the temperature changes. For this reason, fill only to the nominal volume. If the bottle were filled to the brim, the liquid would be pushed out when the dropper is fitted and would soil the thread.

Good to know

Preparation before first filling. We recommend washing the bottle and the disassembled dropper, disinfecting them with isopropyl alcohol or ethanol and letting them dry completely. Residual water in the bottle would dilute anhydrous formulations and would increase the preservation requirements for water-based products.

Suitability for contact with cosmetics. The dropper has a declaration of suitability for use with cosmetic products, and the documentation is available with the product. This declaration is not stated for the bottle. We therefore recommend verifying the behaviour of your specific formulation in the packaging in a stability test.

Essential oils and concentrates. With undiluted essential oils and concentrated alcohol solutions, we recommend checking how the silicone bulb of the dropper and the seal behave over time. Blends diluted in a carrier oil usually do not need such a check.

Reuse. After thorough washing and disinfection, the bottle can be used again. With the dropper, check that the bulb has not become deformed and that the tube is not cracked, otherwise the dropper will not draw up liquid as well.

Choosing a different closure. You will find closures with the same neck finish and other ready-made combinations in the Handymade range. If you make your own combination, we recommend verifying the tightness and dispensing with your specific formulation.

Recycling. The glass bottle belongs in glass recycling. The dropper is made of several materials, so before disposal separate the glass tube from the plastic and metal parts.

Frequently asked questions