The modern, refined appearance of smoky grey glass paired with the simple, fast operation of a black plastic screw cap creates a combination that performs especially well in daily bottling work. This pack of 168 contains 100 ml smoky grey dropper bottles, each with a single black plastic screw cap — ideal for small businesses, essential oil creators, and cosmetics makers who want a refined, contemporary look.
What the 168-piece pack contains
168 smoky grey (translucent) 100 ml glass dropper bottles and 168 matching black plastic screw caps. Height per bottle is approximately 130 mm, diameter 52 mm, empty weight around 120 g per piece, with a total gross pack weight of 22.18 kg. The bottles use a GL18 neck finish, so other caps and pipettes from the family are also compatible.
The character of smoky grey glass
The smoky grey, translucent glass gives the finished product a distinctive, refined appearance: the outline of the contents shows through softly, while shorter wavelengths of visible light are effectively filtered. Essential oils and botanical extracts are sensitive to light — UV and visible blue wavelengths degrade volatile components, alter colour, and reduce active-ingredient content. The smoky grey tone offers more protection than clear glass and presents a more contemporary aesthetic than classic amber glass.
Advantages of the black plastic screw cap
The black plastic screw cap provides a traditional threaded closure: quick to fasten and unfasten, requiring no special motion, with an internal liner that ensures a leak-proof seal. It is an ideal choice for preparations that are opened and closed several times a day — for example a body oil or a facial serum. The cap is BPA-free, although it is advisable to test the compatibility of citrus essential oils or those high in monoterpenes before long-term storage, as these components can affect the plastic over time.
Areas of use
- Bottling body oils, massage oils, and carrier-oil recipes in a 100 ml format
- Bottling essential oil blends and perfume bases for daily use
- Dispensing natural facial serums and skin-care concentrates
- Storing botanical tinctures, hydrosols, and floral waters
- Creating DIY and own-brand cosmetic products for small businesses
Cleaning and storage
Wash the glass bottles in warm, soapy water and rinse thoroughly with clean water. For stubborn fragrance residue, rinse the interior with 70 percent isopropyl alcohol. Clean the cap as well, but avoid the dishwasher, as high temperatures can deform the plastic. Store clean, dry bottles upright in a cool, dark place — this storage position is also the gentlest on the cap's threads and seal.