Laboratory Plastic Funnels

Laboratory plastic funnels are used for transferring liquids, directing powders into narrow-necked containers, and gravity filtration setups in school science labs, university teaching labs, and professional laboratory environments across South Africa. Our range includes polypropylene conical funnels, short-stem funnels, and powder funnels in multiple sizes.

Plastic funnels are safer, lighter, and more impact-resistant than glass alternatives, making them the preferred choice for school labs and general-purpose laboratory use where chemical compatibility permits. Polypropylene funnels resist most acids, alkalis, and aqueous solutions.

SmartLabs supplies laboratory plastic funnels to schools and labs across South Africa. Browse our range for reliable, affordable plastic filtration equipment with fast delivery from our Boksburg warehouse.

What is a laboratory plastic funnel?

A laboratory plastic funnel is a cone-shaped guide made from polypropylene (PP) or polyethylene (PE), used to direct liquids or fine powders through a narrow opening without spilling. Lab funnels range from small short-stem funnels for filtering into flasks, to large 17 cm plain funnels for transferring bulk reagents, to Buchner funnels with perforated plates for vacuum-assisted filtration. PP funnels are chemically resistant, autoclavable, and shatterproof.

SmartLabs stocks plain PP funnels in a range of sizes including a large 17 cm clear funnel for rapid transfer, PP funnel holders for hands-free filtration, and rubber cone adapters for seating Buchner funnels on sidearm flasks in South African school and research laboratories.

Common uses of laboratory plastic funnels in the lab

Laboratory plastic funnels serve essential roles across a wide range of laboratory and teaching applications.

  • Liquid transfer

    A funnel channels liquids from a wide-mouth container into a narrow-neck bottle or flask without spilling. This is one of the most frequent uses in any laboratory or field setting, from transferring reagents into wash bottles to filling burettes cleanly.

  • Gravity filtration

    A long-stem funnel holds a folded or fluted filter paper above a collection flask, separating solid precipitates from liquid filtrates by gravity. The stem guides the filtrate into the flask and helps maintain a good seal between the filter paper and the funnel cone to speed filtration.

  • Vacuum filtration

    A Buchner funnel with a perforated plate is placed over a sidearm Erlenmeyer flask connected to a vacuum pump. The pressure difference accelerates filtration of fine crystalline solids or biological particulates far faster than gravity alone.

  • Powder and solid transfer

    A wide short-stem funnel guides powders, granules, and solid reagents into narrow containers without spillage. The cone shape corrals loose material and the smooth PP surface releases powder cleanly without static cling or retention.

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