Description

USA Made 2 Neck Round Bottom Flask - 55/50 Center - 24/40 Side - 2L , 5L & 6L

The USA Made 2 Neck Round Bottom Flask - 55/50 Center - 24/40 Side - 2L , 5L & 6L is a high-quality laboratory round bottom flask designed for assembled laboratory glassware systems and demanding chemical research applications. Its USA-made construction provides a reliable option for laboratory setups requiring a two-neck configuration.

The 55/50 center opening is designed to support improved flow when the flask is incorporated into a fully assembled short path kit. The additional 24/40 side opening provides a secondary connection point for compatible laboratory glassware components.

Available in 2L, 5L, and 6L capacities, this two-neck round bottom flask is suitable for laboratory workflows involving short path assemblies, chemical sciences, pharmaceutical research, and other applications requiring a larger-capacity round bottom flask with multiple connection points.

Made in USA 55/50 Center Joint 24/40 Side Joint 2 Neck 2L, 5L & 6L

Dual-Neck Configuration: 55/50 center and 24/40 side openings provide multiple connection points for compatible laboratory glassware.

Short Path Compatibility: The 55/50 center opening supports improved flow when used within a fully assembled short path kit.

Multiple Capacities: Available in 2L, 5L, and 6L sizes to support different laboratory process requirements.

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 USA Made 2 Neck Round Bottom Flask?

USA-made laboratory glassware — manufactured in the USA for laboratory applications requiring a dependable round bottom flask.
55/50 center opening — designed to provide improved flow when incorporated into a fully assembled short path kit.
24/40 side opening — provides an additional connection point for compatible laboratory glassware components.
Two-neck design — supports multi-component laboratory assemblies where more than one connection point is required.
Multiple capacity options — available in 2L, 5L, and 6L configurations for different laboratory workflows.

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Technical Specifications

Specification	Details
Product Name	USA Made 2 Neck Round Bottom Flask - 55/50 Center - 24/40 Side - 2L , 5L & 6L
Product Type	Round Bottom Flask
Country of Manufacture	USA
Neck Configuration	2 Neck
Center Joint	55/50
Side Joint	24/40
Center Opening	55/50
Side Opening	24/40
Available Size 1	2000ml / 2L
Available Size 2	5000ml / 5L
Available Size 3	6000ml / 6L
Capacity Range	2L to 6L
Flask Shape	Round Bottom
Glassware Configuration	Two-Neck
Short Path Compatibility	Suitable for fully assembled short path kit configurations
Flow Feature	55/50 center opening designed for improved flow in assembled short path kits
Connection Points	Two
Primary Use	Laboratory glassware assemblies and short path systems
Typical Applications	Chemical Sciences, Pharmaceutical Research, Academic Research, Laboratory Research

Popular Industries & Use Cases

Laboratory Research Pharmaceutical Research Chemical Sciences Academic Research

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FAQ

What are the joint sizes on the USA Made 2 Neck Round Bottom Flask?

The USA Made 2 Neck Round Bottom Flask features a 55/50 center opening and a 24/40 side opening for compatible laboratory glassware connections.

What sizes are available for the USA Made 2 Neck Round Bottom Flask?

The USA Made 2 Neck Round Bottom Flask is available in 2000ml / 2L, 5000ml / 5L, and 6000ml / 6L capacities.

Can this round bottom flask be used with a short path kit?

Yes. The 55/50 center opening is designed to support improved flow when the flask is incorporated into a fully assembled short path kit.

Where is the USA Made 2 Neck Round Bottom Flask manufactured?

This round bottom flask is made in the USA and is designed for laboratory glassware assemblies, including short path configurations and other chemical research workflows.

Important Shipping Notice!

DISCLAIMER:

All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.

Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.

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Specifications

Brand:	USA Lab
Head Connection:	55/50
Side Connection:	24/40
Glass:	Made in USA
Return Window:	30 Days
Lead Time:	1-3 Days
Warranty Term:	1 Year

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

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Summaries above are provided for convenience. The full Policies & Warranty Info pages govern all orders and may be updated at any time.

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USA Made 2 Neck Round Bottom Flask - 55/50 Center - 24/40 Side - 2L , 5L & 6L

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