Usage Guide

• Dropping funnels are used to add a liquid to a mixture. They can also be used as a separating funnel if needed.
• Glass keys are the traditional type, now mostly superseded by PTFE.
• Graduated dropping funnels can be used to estimate how much liquid is being added. They are calibrated to 2% accuracy and are not intended as a primary measure of volume.
• Pressure equalising side arms allow a solvent to be added to a mixture in a sealed system.
• Open top dropping funnels are useful for ease of refilling in situ.

• Equalising Side Arm, Graduated, PTFE Key (5)
• Equalising Side Arm, Ungraduated, PTFE Key (5)

• Open Top, Glass Key (4)
• Open Top, PTFE Key (4)

• Type 4, Ungraduated, Glass Key (7)
• Type 4, Ungraduated, PTFE Key (5)

• Type 5, Graduated, Glass Key (5)
• Type 5, Graduated, PTFE Key (6)