Cleaned and individually bagged, these funnels are free of particles or residues that could contaminate your samples. Use them to move liquids or powders from one container to another, then toss them when you’re done. These funnels have ridges that stop liquids from swirling around the inside, which helps them drain faster. Made from polypropylene, these funnels hold up to use with chemicals.

To prevent cross contamination, toss these funnels after you transfer liquids or powders from one container to another. These funnels are polypropylene, so they’re lightweight and good for most general purpose applications, even chemicals. Ridges stop liquids from swirling for fast drainage.

Control flow as you transfer liquid into a new container. Also known as separatory funnels, these funnels were originally used in labs to let liquid mixtures separate, like oil and water, to dispense them by density. But they have broader utility too—the stopcock lets you adjust the flow of any liquid from a trickle to a stream. Unlike most funnels, they’re enclosed at the top. Cap them to prevent spills as you move them around your station. Made entirely of borosilicate glass, they withstand high temperatures and harsh chemicals. The glass doesn’t leach, so it won’t affect the contents. All meet strict ASTM standards for laboratory glassware material and dimensions.

Separate solids and liquids. Also known as Buchner funnels, these funnels have a built-in perforated plate—use it by itself or to hold filter paper. Since the plate is built in, all solid material is collected on top while liquid filters through uncontaminated.

To speed up the filtration process, use these funnels with a vacuum flask. Place them into the flask’s stopper for an airtight seal.