Rounded Clear Plastic Bottle, Type B, Black Pump, 300 ml

A clear PET bottle with a nominal volume of 300 ml and a black pump make up a ready-to-use set for liquid and medium-thick cosmetic products that are taken out repeatedly in small doses. One press always dispenses approximately the same amount without unscrewing anything, the contents do not spill, and neither fingers nor water from the sink get into the bottle. The clear plastic shows the colour and the remaining amount of the product, so you can see when to refill it and assess the finished product without opening it. PET is lightweight and does not break when dropped on a tiled floor, which is a significant difference compared to glass in a bathroom.

The set is declared suitable for contact with cosmetic products. The black pump on its own has a certificate for direct food contact, but the bottle does not, so the set as a whole is intended for cosmetics.

What the set is suitable for

The 300 ml volume and the small-dose pump suit products that are used daily and in larger amounts:

• Liquid soap, shower gel, shampoo and conditioner – a liquid to medium-thick consistency passes through the pump smoothly, and one press corresponds to the usual amount for one wash.
• Body lotion and lighter emulsions – thinner emulsions dispense without problems. With a thicker cream, check whether the pump can draw it up through the tube.
• Body, massage and cleansing oils – the oil is dispensed precisely in small doses, and the bottle does not need to be opened during a massage.
• Micellar water and facial toners – water-based products without particles are undemanding for the pump.

Avoid using the pump with thick creams, scrubs with solid particles and products with lumps. A firmer mass is hard to draw up through the narrow tube, and particles can jam the mechanism.

How to work with the set

The pump is screwed onto the neck of the bottle, and one press dispenses approximately 1 ml of product. The actual dose depends on the viscosity of the contents, and a thicker product dispenses slightly less. After filling, prime the pump by pressing it several times until the tube and the mechanism fill up and the product starts to come out.

Before the first filling, the bottle and the pump are washed, disinfected with isopropyl alcohol or ethanol and left to dry completely. Emulsions and gels are filled only after they have cooled down, and the bottle must be protected from heat, because warm contents can deform the wall. After assembly, turn the bottle upside down over the sink and check that the thread joint is tight. When travelling, it is worth tightening the neck and carrying the bottle upright, as pumps lying flat in a bag often leak.

Nominal and total volume

The nominal volume of 300 ml is the volume the bottle is designed for in normal filling. The total volume up to the neck is larger, and the difference between them provides a reserve for the pump tube and for the expansion of the contents with temperature changes. For this reason, fill only up to the nominal volume, never to the brim. If the bottle were filled up to the neck, part of the product would be pushed out when the pump is screwed on, and there would be no space left in the bottle for the return of air that the pump needs.

Good to know

• Light – the clear wall does not protect the contents from light. Store products with light-sensitive ingredients (unstabilised vegetable oils, vitamin C, some essential oils) in a cabinet away from the window, or choose packaging made of a dark material.
• Essential oils and solvents – PET tolerates common cosmetic bases, but a high proportion of essential oils, alcohol or citrus essential oils can cloud or soften the plastic over time. Check compatibility with your specific formulation on a test sample before larger production.
• Heat – do not leave the bottle in the sun or near a heat source. PET deforms at higher temperatures, and the pump may leak when the contents expand.
• Reuse – after washing and disinfection, the bottle and the pump can be used again. Clean the pump thoroughly between different formulations, because soap residues in an oil will cause cloudiness.
• Recycling – the bottle is made of PET with material code 1 and belongs in plastic collection on its own. The pump combines several materials including steel and glass, so separate it from the bottle before disposal.

You will find closures with the same neck finish and other ready-made combinations of a bottle with a closure in the Handymade range. If you make your own combination, check the tightness, the dispensing and the behaviour of the packaging with your specific formulation.

Frequently asked questions