Professionally used in chemical laboratories, plastic material, making chemical experiments more perfect. Can be used for analytical chemistry experiments. and durable, reusable, perfect for classrooms, labs and homes. Features - ColorWhite - Material: Plastic. - Size: 14.00X8.00X8.00cm/5.50X3.14X3.14in - Made of safe plastic material and fine craftsmanship, durable and . - Widely used in chemical, pharmaceutical, scientific research institutions or various colleges and universities. - Ordinary acid-base has little effect on it and can be used in food utensils. - The filtration effect can be achieved by vacuum or negative pressure suction, which is a good helper in the laboratory. - Polished and smooth without barbs, protects your delicate skin and resists corrosion. Package list: 2 x Buchner funnels