1 x Plastic Conical Flask & 20 x Plastic test tubes for laboratory test Designed with 250ml capacity; Tubes have Round Bottom with screw caps on the top Made of plastic material in clear white, conical body Open design, the container's body has number scale,so you can easy to read milliliters Ideal for samples, food colourings, craft use, etc. These were manufactured for use as centrifuge tubes, and hence are leak-proof. Material: PP Specification: Flask: Depth: Approx.13cm; Bottom Diameter: Approx.8.5cm Mouth Diameter(outer): Approx. 5.5cm; Mouth Diameter(Inner): Approx. 3.8cm Test Tube: The non-wetting interior surface eliminates concave menisci, providing more accurate measurements Switching from glass cylinders to Globes plastic equivalents will greatly reduce breakage and the potential for injury Chemically resistant to most acids, bases and many common solvents Test tube Height: Approx. 6cm / 2.36inch Bottleneck inter diameter: Approx. 1cm / 0.39inch; Bottleneck outer diameter: Approx. 1.2cm / 0.47inch Package Includes: 1 Piece Lab Plastic Conical Flask 20 Pieces Plastic Test Tubes