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Specifically shaped for uniform heat distribution, the round bottom flasks are used for distillation, chemical reactions, heating liquid sample, and storage demands. Manufactured from resistant glass, the spherical containers will spread encountered stress evenly across surfaces to prevent fracturing. Built with temperature resistance, the glassware is an essential piece in reflux set-ups. Primarily used for chemical and biochemical research, the round bottom flasks have short or long neck options.

Specifically shaped for uniform heat distribution, the round bottom flasks are used for distillation, chemical reactions, heating liquid sample, and storage demands. Manufactured from resistant glass, the spherical containers will spread encountered stress evenly across surfaces to prevent fracturing. Built with temperature resistance, the glassware is an essential piece in reflux set-ups. Primarily used for chemical and biochemical research, the round bottom flasks have short or long neck options.


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Product Image-271-1546

Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 2000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ext.Ø: 166 mm

Catalog Number: (271-1546)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 2000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ext.Ø: 166 mm
UOM: 1 * 1 items
Product Image-LENZ03347349

Flask, round bottom, Standard ground joints, four necks, three angled side necks (7°), DURAN® Borosilicate glass, Capacity: 250 ml, Centre neck: 29/32 NS, Side necks: 19/26 NS, Ø ext.: 85 mm

Catalog Number: (LENZ03347349)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, three angled side necks (7°), DURAN® Borosilicate glass, Capacity: 250 ml, Centre neck: 29/32 NS, Side necks: 19/26 NS, Ø ext.: 85 mm
UOM: 1 * 1 items
Product Image-LENZ03347358

Flask, round bottom, Standard ground joints, four necks, three angled side necks (7°), DURAN® Borosilicate glass, Capacity: 500 ml, Centre neck: 29/32 NS, Side necks: 19/26 NS, Ext.Ø: 105 mm

Catalog Number: (LENZ03347358)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, three angled side necks (7°), DURAN® Borosilicate glass, Capacity: 500 ml, Centre neck: 29/32 NS, Side necks: 19/26 NS, Ext.Ø: 105 mm
UOM: 1 * 1 items
Product Image-LENZ03345488

Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 10000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ø ext.: 279 mm

Catalog Number: (LENZ03345488)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 10000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ø ext.: 279 mm
UOM: 1 * 1 items
Product Image-LENZ03345476

Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 3000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ext.Ø: 185 mm

Catalog Number: (LENZ03345476)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 3000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ext.Ø: 185 mm
UOM: 1 * 1 items
Product Image-LENZ03345482

Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 5000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ext.Ø: 223 mm

Catalog Number: (LENZ03345482)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 5000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ext.Ø: 223 mm
UOM: 1 * 1 items
Product Image-271-1545

Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 1000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ø ext.: 131 mm

Catalog Number: (271-1545)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 1000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ø ext.: 131 mm
UOM: 1 * 1 items
Product Image-271-1536

Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 4000 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ext.Ø: 207 mm

Catalog Number: (271-1536)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 4000 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ext.Ø: 207 mm
UOM: 1 * 1 items
Product Image-LENZ03344485

Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 6000 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ext.Ø: 256 mm

Catalog Number: (LENZ03344485)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 6000 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ext.Ø: 256 mm
UOM: 1 * 1 items
Product Image-LENZ03345485

Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 6000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ext.Ø: 236 mm

Catalog Number: (LENZ03345485)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 6000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ext.Ø: 236 mm
UOM: 1 * 1 items
Product Image-LENZ03345479

Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 4000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ext.Ø: 207 mm

Catalog Number: (LENZ03345479)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 4000 ml, Centre neck: 45/40 NS, Side necks: 29/32 NS, Ext.Ø: 207 mm
UOM: 1 * 1 items
Product Image-LENZ03344476

Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 3000 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ext.Ø: 185 mm

Catalog Number: (LENZ03344476)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, side necks parallel, DURAN® Borosilicate glass, Capacity: 3000 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ext.Ø: 185 mm
UOM: 1 * 1 items
Product Image-201-0908

Flask, round bottom , Standard glass ground joint, single neck, Borosilicate glass, Capacity: 50 ml, Socket size: 29/32 NS, Height: 105 mm, Ø ext.: 51 mm

Catalog Number: (201-0908)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom , Standard glass ground joint, single neck, Borosilicate glass, Capacity: 50 ml, Socket size: 29/32 NS, Height: 105 mm, Ø ext.: 51 mm
UOM: 1 * 1 items
Product Image-201-1365

Flask, round bottom , Standard glass ground joint, single neck, Borosilicate glass, Capacity: 250 ml, Socket size: 29/32 NS, Height: 145 mm, Ø ext.: 85 mm

Catalog Number: (201-1365)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom , Standard glass ground joint, single neck, Borosilicate glass, Capacity: 250 ml, Socket size: 29/32 NS, Height: 145 mm, Ø ext.: 85 mm
UOM: 1 * 1 items
Product Image-201-1366

Flask, round bottom, Standard glass ground joint, single neck, Borosilicate glass, Capacity: 500 ml, Socket size: 29/32 NS, Height: 175 mm, Ext.Ø: 105 mm

Catalog Number: (201-1366)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard glass ground joint, single neck, Borosilicate glass, Capacity: 500 ml, Socket size: 29/32 NS, Height: 175 mm, Ext.Ø: 105 mm
UOM: 1 * 1 items
Product Image-201-1364

Flask, round bottom , Standard glass ground joint, single neck, Borosilicate glass, Capacity: 100 ml, Socket size: 29/32 NS, Height: 115 mm, Ø ext.: 64 mm

Catalog Number: (201-1364)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom , Standard glass ground joint, single neck, Borosilicate glass, Capacity: 100 ml, Socket size: 29/32 NS, Height: 115 mm, Ø ext.: 64 mm
UOM: 1 * 1 items
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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on 0800 22 33 44.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on 0800 22 33 44
Additional Documentation may be needed to purchase this item. A VWR representative will contact you if needed.
Additional Documentation may be needed to purchase this item. A VWR representative will contact you if needed.
This product has been blocked by your organisation. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
Product(s) marked with this symbol are discontinued - sold till end of stock. Alternatives may be available by searching with the VWR Catalogue Number listed above. If you need further assistance, please call VWR Customer Service on 0800 22 33 44.
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