This pack of 156 contains 15 ml amber glass dropper bottles with a simple black plastic screw cap. This version is for those who do not need a tamper-evident ring or a childproof mechanism and are looking for a sleek, lower-cost closure for their own fills. The black cap gives the whole bottle a clean, uniform look.
What is in the pack of 156
156 amber glass bottles of 15 ml volume, paired with 156 black plastic screw caps. Height 65 mm, diameter 28 mm, neck thread GL18. A bottle + cap unit weighs around 5 g and gross pack weight is approximately 0.78 kg. Country of origin: China. The interior of the cap features a sealing liner that prevents leakage.
Amber glass and UV protection
Amber glass slows the oxidation of essential oils and botanical extracts by filtering out UV radiation and the shorter wavelengths of visible light. Light filtering combined with the plastic cap's seal provides an adequate level of protection for the most common essential oil applications: the scent profile retains its original character for a longer period.
Black plastic cap — details
The cap features a simple screw-thread design, made of polypropylene or similar food-grade plastic. The lower production cost gives the price advantage: if you do not need a tamper-evident authenticity proof or a childproof closure, this solution is well suited. The black colour also delivers a consistent, professional appearance across a whole series. For long-term storage, an aluminium cap or TE dropper cap is more reliable — particularly with oils high in monoterpenes.
Areas of use
- Bottling essential oil blends for personal use
- Home cosmetic development in matching bottles
- Simple storage of hydrosols and tinctures
- Packaging custom preparations intended as gifts
- Building a consistent black-and-amber series
Cleaning and maintenance
The cap can be cleaned with warm soapy water. Avoid the dishwasher and strong solvents, as the plastic can crack over time. For long-term storage of essential oils high in monoterpenes (citrus, conifer), the cap is best replaced every 1-2 years or switched to an aluminium cap.