For quick and easy filtration, Whatman™ 3-Piece filter funnels are available with a choice of three plates and come in several sizes to match your needs. The functional, easy-to-clean design features 3-piece construction, making dismantling quick and easy. The glass sealing flanges of the funnel and reservoir are ground flat to ensure a good filter seal. All retained solids are deposited within the filter circle. Edge clamping prevents peripheral loss and possible passage of solution around, rather than through, the filter circle.
Acrylic Plate: Supplied as standard. Suitable for filtration of most aqueous solutions. Maximum working temperature 65°C.
Polypropylene Plate: Optional extra. Recommended for most acids (except concentrated nitric acid and fuming sulfuric acid) at room temperature. Suitable also for most alcohols, glycols, ethers, and ketones. Maximum working temperature 100°C.
PTFE Plate: Optional extra. For virtually all common acids, alkalis, and solvents at temperatures up to 100°C. Maximum working temperature 200°C.