Made of high-quality borosilicate glass, which is strong, durable and heat-resistant Provides a Lab Filtration Unit plus 0.45 m pore size Nylon Filter Membranes, including a 1000mL filter flask, a 300mL graduated funnel, filter papers and an aluminum clamp Filtration Apparatus is compatible with 42-60mm membrane filter paper Commonly used in industrial and academic laboratories for filtering particles, bacteria and other substances Nylon 66 Filter Membranes, diameter of 50mm/ 2.0inch, used for most filtrations of organic solutions and water solutions Specification: Filtration Apparatus: Materials: borosilicate glass, rubber, aluminum Diameter of Sand Cone: 40mm, 40mm is also the inner diameter of the filter joint. So you have to choose the membrane filters of larger size than Diam. 40mm. Filter Flask Capacity: 1000ml Graduated Funnel Capacity: 300ml (50mL graduations for quick, easy measurement) Height of Flask: 23cm Bottom Diameter of Flask: 13.5cm, Height of Funnel: 12cm Funnel Top Diameter: 8cm; the filter is 12cm high. Nylon 66 Filter Membranes: Pore Size: 0.45m Color: White Diameter Outside: 50mm/ 2.0inch Package Includes: 1 Piece 1000mL filter flask 1 Piece 300mL graduated funnel with lid 1 Piece aluminum clamp (above 3 pcs are all packed in one box) 50 Pieces Organic Filter Membranes Sheets Note: The papers should be sealed, moisture-proof when stored.