This 50mL PYREX® Taylor Universal tube with Lifetime Red™ graduation is for general hospital laboratory work. It was designed by Dr. F.N.L. Taylor, Boston City Hospital, for determinations involving multiple calibrations and for carrying out digestions. Graduated at 12.5, 25, 35 and 50mL, and supplied with a durable, white enamel marking spot. Non-Sterile. Reusable. Material: Borosilicate Glass Code 7740. Capacity: 50mL. Tube Style: Taylor Universal. Tube Shape: Cylindrical. Bottom Style: Round. Top Style: Beaded Rim. Graduation Range: 12.5 to 50mL. Feature: Lifetime Red™ Graduations. Tolerance: +/- 0.4mL. Cap Style: No Cap. Stopper Style: No Stopper. Outer Diameter: 25mm. Length: 200mm. Corning® #: 7952-25.