1630A Measuring Pipette, class A, Graduated with zero at top Measuring pipette is a precision fluid measuring instruments. Calibrated to deliver. Graduated in white from the tip of the pipette. With a color-coded band at the top for easy size identification. The pipettes are manufactured to meet Class A tolerances. Key Product Features: 1.Calibrated to deliver an accurate dosing every time 2.Top-rack dishwasher safe 3.Borosilicate Glass Class A