Cobalt blue glass is more than decorative: preserving the delicate scent profile of essential oils and botanical extracts requires light filtering. Cobalt blue glass blocks UV radiation and shorter wavelengths of visible light, while giving the finished product a distinctive vintage, apothecary appearance. This pack of 192 is designed for those who work in larger volumes with their own formulations and prefer to select a matching closure separately.
What the pack of 192 contains
192 cobalt blue glass dropper bottles with a 10 ml nominal fill capacity. Each bottle is approximately 57 mm tall, 24 mm in diameter, with an empty weight of roughly 28-33 g. Total package weight is around 5.9 kg. Caps are NOT included — you choose the closure that fits your needs (aluminium, child-resistant, pipette, or screw cap).
Cobalt blue glass — UV protection and vintage aesthetics
Cobalt blue glass filters UV radiation as well as the shorter (blue-green) wavelengths of visible light, allowing light-sensitive volatile compounds to retain their scent profile for longer. Delicate linalool-based essential oils — lavender, bergamot, ylang-ylang, neroli — are particularly well suited to storage in blue glass. Cobalt blue also lends a clear apothecary character to the finished product, which many makers deliberately seek out when developing their own cosmetic or aromatherapy line. Note that blue glass is not fully opaque; in certain lighting conditions the contents may be faintly visible, which also makes it easier to check fill levels.
Why caps are ordered separately
The 10 ml bottle neck is a standard GL18 size, so the caps in our range are generally compatible: solid aluminium caps for airtight closure, black pipette droppers for precise dispensing, child-resistant caps for safety, or black plastic screw caps for longer-term storage. Anyone bottling several preparations at once can mix closure types from the same base glass series.
Typical areas of use
- Bottling and gifting your own essential oil blends
- Storing natural facial serums, skin oils, and body oils
- Dispensing botanical tinctures, hydrosols, and flower essences
- Custom perfume bases and vintage-styled DIY cosmetics
- Building a small-business own-brand product line
Cleaning and storage
We recommend rinsing new bottles in warm soapy water before first use, then drying thoroughly. To recycle previously used bottles, an isopropyl alcohol rinse is the most effective way to remove residual scents. Dishwasher cleaning is not advised, as labels or printing may be damaged. Store filled bottles in a cool, dark place for optimal preservation of the contents.