Corning Pyrex 70820-10 Borosilicate Glass Round Bottom 3mL Vista Reusable Rimless Culture Tube, 10mm OD x 75mm Length, Clear (Pack of 50) PYREX serological pipet Capacity: 5mL Wide tip shape; blue color code Two narrow bands or one wide band at the top indicate the pipet is calibrated 'to deliver' (TD) its total capacity when the last drop is blown out Non-sterile; reusable