The 30 ml cobalt blue glass dropper bottles are supplied without caps, allowing you to flexibly combine them with the cap type that best suits your own preparations. This 110-piece pack is recommended for essential oil creators and cosmetic formulator small business owners who already have their own cap stock or wish to combine the bottles with different caps — pipette droppers, aluminium caps, or child-resistant closures.
What is included in the 110-piece pack
110 cobalt blue glass dropper bottles without cap, each with a nominal 30 ml fill capacity. The height of one bottle is approximately 85 mm and the diameter is 35 mm. The total gross weight of the pack is around 6.05 kg, and an empty bottle weighs approximately 50 g. The bottles have a standard GL18 thread and are therefore compatible with standard caps available on the market.
Cobalt blue glass and the benefit of light filtering
Cobalt blue glass absorbs not only the UV range but also part of the shorter visible wavelengths — particularly blue and green light. This extended protection provides longer shelf life for preparations sensitive to light. The terpene compounds of essential oils, the antioxidants of botanical extracts, and vitamins in fatty acids — such as vitamin E in body oils — degrade more slowly in cobalt blue glass. The glass is fully chemically inert: it contains no BPA, phthalates, or migratable plasticisers.
Why the cap-free format is advantageous
The cap-free version is an ideal choice if you work with your own cap system, or if you want to use the same bottle with different cap types for various preparations. You can pair a black pipette dropper for an aromatherapy blend, an aluminium cap for a perfume base, and a child-resistant closure for a tincture — all on the same bottle. This modular approach reduces stock requirements and allows precise bottling tailored to the nature of the final product.
Areas of use
- Bottling essential oil blends and aromatherapy formulations
- Storing perfume bases, colognes, and scented serums
- Filling natural cosmetics (facial serums, body oils, hair oils)
- Dispensing botanical tinctures, hydrosols, and flower essences
- DIY beauty products and own-brand creation for small business owners
Cleaning and reuse
The bottles can be rinsed in warm soapy water before and after use. For stubborn scent residue, pure ethyl alcohol (70%) is recommended. The glass is reusable many times over and recyclable in an environmentally friendly way. Avoid dishwasher use if there is a printed surface or label on the bottle.