Plastic bottle, clear round, white screw cap with dropper, 28/410, 500 ml

A 500 ml plastic bottle with a white screw cap and dropper insert is a container for thin liquids dispensed in small amounts. The dropper fitted in the neck narrows the outlet, so the contents do not pour out all at once but drop by drop or in a thin stream. Through the transparent wall you can see the colour and clarity of the contents as well as how much is left.

The set is suitable for massage and body oils, bath oils, hydrosols, facial and hair waters. It also works as a bulk packaging for liquid raw materials from which only small amounts are drawn during production. Plastic is lightweight and will not shatter if dropped, which is an advantage in the bathroom, the workshop, and when shipping finished products. The bottle, cap, and dropper are all declared as suitable for contact with cosmetics.

How the set dispenses and seals

The dropper sits in the bottle neck and the cap screws onto the neck above it. When the bottle is tilted, the contents flow out through the small opening. Dispensing speed depends on the viscosity of the contents and the angle of tilt. Thin aqueous solutions and alcohol-based preparations drip quickly; oils drip more slowly and evenly.

• Controlled dispensing – even from a large volume, a few drops can be drawn without spilling.
• Reduced air contact – the narrow opening limits the entry of contaminants and reduces the surface area through which the contents are exposed to air after opening.
• Spill protection – if the bottle is knocked over, the contents will not pour out all at once. A properly tightened cap ensures leak-proof transport.

Thick gels, creams, emulsions, and preparations containing solid particles do not dispense well through a dropper insert. For such products, a different closure type is more appropriate.

Nominal and total volume

Two volumes are distinguished for the bottle. Nominal volume is the quantity the container is intended for during normal filling. Total brimful volume is the physical volume up to the neck. The difference between them is the headspace for the dropper insert, which extends into the neck, and for expansion of the contents with temperature changes.

Good to know

Preparation before first filling. We recommend washing the bottle, cap, and dropper, sanitising with isopropyl alcohol or ethanol, and allowing to dry completely. Residual water in the container is a risk especially with oil-based and anhydrous products.

Filling. The bottle is filled before the dropper is inserted. The dropper is then pressed into the neck and the container closed with the cap. The contents should be filled cooled down, as a hot fill can deform the plastic.

Light. Transparent plastic does not protect the contents from light. Products sensitive to light should therefore be stored away from light.

Food contact. The set as a whole is intended for cosmetics. The bottle and cap individually hold food contact declarations; the dropper does not.

Labelling. The rounded shape of the bottle provides a continuous surface for a label around the circumference. The dimensions needed to design it are listed in the specifications. The label should be applied to a dry, grease-free surface.

Other closures. Closures with the same neck type as specified in the parameters, as well as ready-made bottle and closure combinations, are available from Handymade. With a custom combination, we recommend verifying the seal, dispensing performance, and container behaviour with the specific formulation.

Recycling. All three parts of the set are plastic; the cap and dropper are made of polypropylene. The empty, rinsed container belongs in sorted plastic waste.

Frequently asked questions