Description

USA Lab 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 buy from USA Lab

Expert Support
Engineers & technicians on staff.

Quality First
Tested and trusted products.

Fast Fulfillment
Nationwide 1-2 day shipping.

Warranty & Parts
US-based service & spares.

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.

Talk to an expert

Get sizing help, setup guidance, and best-practice tips for your workflow.

Call 734-855-4890

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

Popular Industries & Use Cases

Chemical Sciences Academic & Research QA/QC Laboratory Pharmaceutical

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Programs & Terms

Exclusive options for businesses and academics.

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Custom Solutions

Tailored tanks, skids, and integration help.

Custom Request Consulting

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We’ll help spec the right system for your throughput.

Call 734-855-4890 Email Sales/Support

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 USA Lab 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

• USA Lab 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

• USA Lab 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

Need Support?

We’ll get you answers fast.

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Specifications

Brand:	USA Lab
Glass type:	Boroscillicate
Joint Size:	29/42
Warranty Term:	1 Year
Return Window:	30 Days
Lead Time:	1-3 Days

Shipping & Returns

1–3 Business Days Standard Processing

Return Policy ↗ Varies by Product Warranty Policy ↗ Varies by Product

3 Days to Claim Inspect on Arrival

Shipping

Orders ship within 1–3 business days after payment clears. We ship Monday through Friday via UPS, USPS, and freight carriers.
Freight items (crated, hazmat, dropship, or special packaging) can take 1–5 business days to ship.
Expedited shipping speeds up transit, not processing. Contact us for true rush orders.
PO Box addresses ship USPS. Alcohols, chemicals, and hazmat cannot ship to a PO Box.

Full Shipping Policy

Delivery & Damage Claims

Inspect every shipment on arrival. Claims must be filed within 3 business days.
Visible damage? Refuse the delivery and have the driver document it. We will file the claim and ship a replacement.
Concealed damage: contact us within 2 days with photos of the packaging and item. Keep all packing materials.
Freight services (liftgate, residential, inside delivery) are the customer's responsibility to select for their location.

Damage & Freight Details

Returns

USA Lab branded products are returnable within 30 days of order date with prior authorization. Email us before sending anything back.
Solvents, chemicals, and consumables are not returnable once shipped. Custom and made-to-order items are final sale.
Unused items in original packaging carry a 15% restocking fee. Defective items ship back on us.
Items showing any signs of use, wear, contamination, or modification are not eligible for return.
Glassware damage must be reported within 3 business days of delivery for replacement or refund.

Full Return Policy

Custom & Made-to-Order Items

Customized and made-to-order products are final sale and not eligible for return under any circumstances.
This includes ductless fume hoods, configured tanks and reactors, and any item built to your specifications.
These products are manufactured specifically for your application. Confirm sizing, voltage, and configuration with our team before ordering.
Damage claim coverage still applies. Inspect on arrival and report issues within 3 business days.

Return Eligibility Details

Warranty

USA Lab products are covered against manufacturing defects for up to 3 years, depending on product line.
1 year: chillers, heaters, rotovaps, reactors, vacuum ovens, mixers, and most equipment. 2 years: UVP vacuum pumps. 3 years: scientific freeze dryers.
Wear items (glassware, gaskets, heating elements, sensors) and fittings/steel are not covered. Report defects within 30 days (3 days for glass).
Non–USA Lab brands are covered by their manufacturer's warranty. See the product's Warranty tab.

Full Warranty Policy

International Orders

Import duties, taxes, VAT, and brokerage fees are not collected by USA Lab and are the receiver's responsibility.
Verify your country's customs charges and import restrictions before ordering.
Refused or unclaimed international shipments are refunded minus shipping and a 15% restocking fee.
International orders are generally non-returnable. Damaged items must be reported within 3 business days.

International Guidelines