Four steps enable you to fill a pipet, up to 25 mL in size, while only manipulating the safety pipet filler and avoiding dangerous solutions. The steps are: insert the pipet in the device; let out bulb air; suck in liquid; empty the pipet.
The bulb is made of highly chemical-resistant silicon rubber. The bulb's valves are glass. Easy to manipulate and clean.
Flinn Catalog/Reference Manual Page 258
Flinn Middle School Catalog/Reference Manual Page 152