PYREX 59mL Flat Bottom Culture Tubes, 25x150mm. Ideal for plant tissue culture and general culture work. Internal drip ring minimizes contamination. Optional polypropylene two position closures (Nos. 26794-25 or 26795-25) can be opened for gas exchange or closed for humidified environment. Tube Style: Culture. Top Style: Rimless. Bottom Style: Flat. Cap Style: No Cap. Surface Treatment: Untreated. Material: Borosilicate Glass Code 7740. Capacity: 59mm (Approx). Height: 100mm (Approx). Outer Diameter: 25mm (Approx). Corning #: 9850-25XX.