Addition Funnel

This cylindrical addition funnel features a PTFE stopcock for controlling liquid addition in compatible laboratory setups. Its listed double graduation scale provides volume references in opposite directions, helping you monitor liquid during a procedure.

Select the required capacity and matching joint size before assembling your apparatus, then support the funnel appropriately according to your laboratory procedure.

Product details

• Style: cylindrical addition funnel.
• Stopcock: PTFE, as listed.
• Graduations: double scale, one increasing from the stopcock and one descending from the capacity line.
• Joints: standard-taper upper outer joint and lower inner joint, described as the same size.
• Capacity options: 50, 100, 250, 500, 1000 and 2000 mL.
• Neck-size option labels: 14/23, 19/26, 24/29, 29/32 and 24/40.

Compatibility and applications

For controlled liquid addition in compatible chemistry and teaching procedures. Match the complete joint designation to your apparatus; joint labels are not liquid capacities. Check the selected capacity and neck-size combination before ordering. A pressure-equalizing arm is not documented, so do not assume this is a pressure-equalizing model.

Specifications to confirm

Glass composition, manufacturer, graduation tolerance, temperature limits and pressure or vacuum ratings are not specified. Graduations do not establish certified volumetric accuracy. Confirm chemical compatibility of the glass, stopcock and any seals, and verify whether a stopper, joint clips or supports are included.

Handling and care

Inspect for cracks and stopcock damage before use. Follow supplier instructions for assembly, cleaning and flow control. Do not use in a pressurized or evacuated system without verified suitability for the entire assembly.