Amber Glass Square Bottle, Black Cap, 10 ml

Small batches of cosmetics that cannot tolerate light belong in dark glass. This amber square glass bottle with a volume of 10 ml and a black screw cap is designed for exactly that: oil and facial serums, essential oil blends, perfume oils, alcohol-based tinctures or samples of toners and emulsions that you send to customers to try. The set consists of a medicine bottle with an 18 mm thread and a plastic 18/410 cap. Both parts are declared suitable for contact with cosmetic products.

Bottle and cap together

The square shape stands steadily on a shelf and the bottles can be stored tightly side by side, which you will appreciate with larger batches of samples. The cap is made of polypropylene (PP) and has an EPE liner that sits on the neck and seals the threaded joint. Once tightened, it closes the bottle without any further accessories.

The cap is a plain one, without a dropper. The contents are poured directly through the neck or dispensed by tilting the bottle. For thicker oils and serums, this is sufficient. For thin liquids, or where precise dispensing matters, a closure with a dropper is usually chosen. Closures with the same neck type and ready-made combinations are available in the Handymade range. If you put together your own combination, we recommend checking the seal, dispensing and the behaviour of the packaging with your specific formulation.

Volume and filling

Nominal volume is the volume the packaging is designed for under normal filling. Total brimful volume is the physical volume right up to the neck, and you will find it in the parameters. The difference between them provides headspace for the cap with its liner and for the expansion of the contents when the temperature changes. The bottle should therefore be filled to the nominal volume, not to the brim. If filled right up to the neck, the cap liner would sit directly in the contents, and the contents could overflow through the thread when the cap is tightened.

Good to know

• Glass and contents – glass does not react with essential oils, alcohol or vegetable oils, which is why amber glass bottles are commonly filled with concentrated blends as well. The cap is plastic, so for contents with a high proportion of essential oils or solvents, check the behaviour of the cap and liner in the finished formulation.
• Leak-tightness in transit – tighten the cap by hand without force and, before sending samples, test the bottle lying on its side. Any leakage through the thread will show up sooner than it would in the parcel.
• Reuse – the glass withstands washing in hot water and repeated disinfection, so the bottle can be used again. Before refilling, check the cap liner to make sure it is not soaked with the previous contents or deformed.
• Recycling – the bottle goes into glass recycling, the cap into plastics. Separate both parts before disposal.

Frequently asked questions