Labeling pipette. Two bends are generated in both the holding and the labeling pipette to ensure that the pipette can reach over the lip of the Petri dish to access the embryo. Using a small flame, the first bend (asterisk) is introduced 1-2 cm from the tip. Turn the pipette (tip pointing upward) and generate the second bend (arrow) 1-2 cm from the first bend. The angle of each bend is ~90°-100°.