Calibrated 'to deliver' (TD) at 20°C, these borosilicate glass pipettes have a permanently colored amber scale with the zero line at the top

• Reference: ASTM E 1044, Lab Grade

The small amount remaining in the tip after completion of free delivery is blown out and added to the main delivery volume (ground band indicator at top). The 5,10, and 25 ml pipettes have openings of reduced diameter.