This is the long plunger button along the side of the pipette body.

Tip Ejector Pushers

Item ITEM# Price Quantity Focus Tip Ejector Pusher 3ul See details FI 10603901 $26.33 Focus Tip Ejector Pusher 5ul See details FI 1060399 $26.33 Focus Tip Ejector Pusher 10ul See details FI 1060398 $26.33 Focus Tip Ejector Pusher 30ul See details FI 1060397 $26.33 Focus Tip Ejector Pusher 50ul See details FI 1060396 $26.33 Focus Tip Ejector Pusher 100ul See details FI 1060395 $26.33 Focus Tip Ejector Pusher 300ul See details FI 1060394 $26.33 Focus Tip Ejector Pusher 1000ul See details FI 1060393 $26.33 Focus Tip Ejector Pusher 5ML See details FI 1060392 $20.00 Focus Tip Ejector Pusher 10ML See details FI 1060391 $26.33  Add selected