Pre-Pulled Glass Pipettes, Luer/Pack of 10Calibrated micropipettes eliminate the cost and trouble of making your own micropipettes Features Schott Duran borosilicate glass pipettes 0. 5 m and smaller ID micropipettes include internal glass fiber for easy filling Tip inner diameter tolerance 20% Short taper yields high strength Nominal length 50 mm OD: ID = 1. 33: 1 Every glass pipette individually tested and inspected Vacuum packed Luer fitting Glass Outside Diameter: 1. 0mm thin wall