Separatory Funnel with PTFE Valve - Various Options 1L / 2L / 5L

Glass Separatory Funnel with PTFE Valve | 2L & 5L Kits
Our Glass Separatory Funnel is built from 3.3 borosilicate glass with a precision PTFE valve for smooth, leak-resistant flow control. Every funnel features a 29/42 ground-glass joint and generous headspace (about 2500 mL) to handle larger phase volumes during liquid-liquid extraction, washing, and separations.
Choose the standalone funnel or a complete kit in 2 L or 5 L capacities—each kit includes a stand, boss head, 3-prong clamp, and support ring so you can set up and start working immediately at the bench.
Durable, easy to clean, and chemically resistant, this borosilicate setup is a reliable choice for academic labs, QA/QC, and process development.

All Separatory Funnels use 29/42 joints and include a PTFE stopcock valve. Kits available: SEP2LKIT (2 L) and SEP5LKIT (5 L).
3.3 Borosilicate Glass PTFE Stopcock Valve 29/42 Ground Joint ~2500 mL Headspace
2 L & 5 L Options Complete Kit Available
Lab-grade durability: 3.3 borosilicate glass resists chemicals and thermal stress.
Precise control: PTFE valve enables smooth, drip-free separations.
Ready-to-run kits: Optional stand, boss head, 3-prong clamp, and support ring included.
Why this separatory funnel?

Borosilicate 3.3 construction — excellent chemical resistance and clarity.
Leak-resistant PTFE valve — precise control for phase separation and washing.
Large working headspace — about 2500 mL to accommodate larger volumes.
29/42 ground-glass joint — compatible with common lab adapters and glassware.
Complete kit options — choose 2 L or 5 L kits with stand, clamps, and ring.
Technical Specifications
Model
Glass Separatory Funnel & Kits
Capacity Options
2000 mL (2 L) & 5000 mL (5 L)
Glass Type
Borosilicate 3.3
Joint Size
29/42 ground-glass
Valve / Stopcock
PTFE stopcock for smooth, controlled flow
Headspace
Approx. 2500 mL
Kit Option (2 L)
SEP2LKIT — 2 L Funnel, Medium Base 6" × 10" Stand w/ 27" Rod, Boss Head Clamp, 10–90 mm 3-Prong Clamp, 80 mm (3.14") Support Ring
Kit Option (5 L)
SEP5LKIT — 5 L Funnel, Eisco Stand 12.4" × 8" w/ 39.5" Rod, Boss Head Clamp, 10–90 mm 3-Prong Clamp, 100 mm (3.94") Support Ring
Typical Use
Liquid-liquid extraction, phase separation, washing organic/aqueous layers
Maintenance
Disassemble valve for cleaning; avoid abrasive cleaners on ground joints
Chemical Sciences Academic & Research QA/QC Laboratory Pharmaceutical
FAQ

What is a separatory funnel used for?

A separatory funnel is used for liquid-liquid extraction, washing organic layers, and phase separation between immiscible solvents.
What joint size and valve does this include?

All separatory funnels in this listing use a 29/42 ground-glass joint and a PTFE stopcock valve for precise, leak-resistant control.
Do you offer complete kits with a stand and clamps?

Yes. Choose the 2 L or 5 L kit to receive the funnel plus a stand, boss head, 3-prong clamp, and support ring sized for each capacity.
What’s included in SEP2LKIT (2 L)?

SEP2LKIT Packing List
• 2000 mL (2 L) Separatory Funnel × 1 • Lab Stand Medium Base 6" × 10" with 27" Steel Rod × 1 • Boss Head Clamp × 1 • 10–90 mm 3-Prong Single Adjust Jaw Lab Clamp × 1 • Support Ring Clamp 80 mm (3.14") × 1
What’s included in SEP5LKIT (5 L)?

SEP5LKIT Packing List
• 5000 mL (5 L) Separatory Funnel × 1 • Eisco Stand Kit 12.4" × 8" with 39.5" Rod × 1 • Boss Head Clamp × 1 • 10–90 mm 3-Prong Single Adjust Jaw Lab Clamp × 1 • Support Ring Clamp 100 mm (3.94") × 1

Specifications
Glass type:
Boroscillicate
Joint Size:
29/42