Clear tall plastic bottle, aluminium cap, 100 ml

A lightweight bottle made of transparent PET plastic with a capacity of 100 ml, supplied together with a silver aluminium cap. The clear material reveals the colour and clarity of the contents, making it suitable for products that should be visible in their packaging – from tonics and shower gels to body oils.

The tall, slim shape leaves plenty of surface area for a label. The cap closes the bottle completely, with no dispensing opening, so the contents are poured directly from the neck. The set is therefore best suited for liquid and free-flowing products.

What the set is suitable for

• Water-based products – tonics, micellar waters, floral waters and liquid soaps. Any cloudiness or sediment is visible through the clear wall.
• Rinse-off products – shower gels, shampoos and bath foams, provided they are fluid enough to pour from the neck.
• Oil blends – body, massage and bath oils. The bottle will not shatter if dropped, which is an advantage in the bathroom.
• Refills and samples – smaller travel-size portions, for testing a new formula or for topping up a bottle fitted with a pump or spray.

The narrow-neck bottle is not suitable for thick creams, ointments and gels that do not flow on their own. A jar is more practical for those.

Bottle and cap as a unit

The aluminium cap screws onto the bottle thread. Inside it has a foam polyethylene sealing liner that seats against the rim of the neck when tightened. The liner also separates the contents from the metal, so the product comes into contact with plastic rather than directly with aluminium. The silver metal gives the clear bottle a neat appearance without any additional decoration.

The bottle neck is standardised; its type is listed in the specifications. If the product requires dispensing, closures with the same neck type as well as ready-made combinations are available from Handymade. With a custom combination, we recommend checking the seal, dispensing behaviour and compatibility of the packaging with the specific formula.

Nominal and total volume

Nominal volume is the amount the bottle is intended to hold during standard filling. Total brim volume is the physical volume up to the neck and is somewhat larger. The difference acts as a buffer: the contents expand slightly with temperature changes and the air gap beneath the cap prevents the product from being forced out through the thread.

Preparation before filling

Before first use, the bottle and cap are washed with warm water and washing-up liquid and rinsed thoroughly. They are then rinsed or sprayed with isopropyl alcohol (IPA) or ethanol and left to dry completely. Residual water in the packaging places an unnecessary burden on the product's preservation.

Good to know

• Essential oils and solvents – undiluted essential oils and aggressive solvents can degrade PET over time. Typical concentrations in finished cosmetics generally cause no problems; at higher levels, a test batch is worthwhile.
• Acidic and alkaline contents – aluminium is sensitive to strongly acidic and alkaline environments. The liner in the cap protects the metal, but with such products it is advisable to inspect the inside of the cap after a few weeks.
• Contact with cosmetics – the bottle and cap are declared suitable for contact with cosmetic products. The set is intended for cosmetics, not for food.
• Labelling – the smooth cylindrical wall holds self-adhesive labels well; dimensions for label design are listed in the specifications. Apply the label to a dry and degreased surface.

Frequently asked questions