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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-201-0330

Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 250 ml, Centre neck: 24/29 NS, Side necks: 19/26 NS, Ext.Ø: 85 mm

Catalog Number: (201-0330)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 250 ml, Centre neck: 24/29 NS, Side necks: 19/26 NS, Ext.Ø: 85 mm
UOM: 1 * 1 items
Product Image-201-1190

Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 100 ml, Centre neck: 24/29 NS, Side necks: 24/29 NS, Ø ext.: 64 mm

Catalog Number: (201-1190)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 100 ml, Centre neck: 24/29 NS, Side necks: 24/29 NS, Ø ext.: 64 mm
UOM: 1 * 1 items
Product Image-201-0101

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 6000 ml, Socket size: 29/32 NS, Height: 360 ± 7 mm, Ext.Ø: 236 mm

Catalog Number: (201-0101)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 6000 ml, Socket size: 29/32 NS, Height: 360 ± 7 mm, Ext.Ø: 236 mm
UOM: 1 * 1 items
Product Image-LENZ03004576

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 3000 ml, Socket size: 45/40 NS, Height: 265 ± 7 mm, Ext.Ø: 185 mm

Catalog Number: (LENZ03004576)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 3000 ml, Socket size: 45/40 NS, Height: 265 ± 7 mm, Ext.Ø: 185 mm
UOM: 1 * 1 items
Product Image-201-1346

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 500 ml, Socket size: 45/40 NS, Height: 163 ± 6 mm, Ø ext.: 105 mm

Catalog Number: (201-1346)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 500 ml, Socket size: 45/40 NS, Height: 163 ± 6 mm, Ø ext.: 105 mm
UOM: 1 * 1 items
Product Image-201-1349

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 4000 ml, Socket size: 45/40 NS, Height: 290 ± 7 mm, Ø ext.: 315 mm

Catalog Number: (201-1349)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 4000 ml, Socket size: 45/40 NS, Height: 290 ± 7 mm, Ø ext.: 315 mm
UOM: 1 * 1 items
Product Image-201-0103

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 1000 ml, Socket size: 34/35 NS, Height: 200 ± 7 mm, Ø ext.: 131 mm

Catalog Number: (201-0103)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 1000 ml, Socket size: 34/35 NS, Height: 200 ± 7 mm, Ø ext.: 131 mm
UOM: 1 * 1 items
Product Image-271-1348

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 2000 ml, Socket size: 45/40 NS, Height: 240 ± 7 mm, Ø ext.: 166 mm

Catalog Number: (271-1348)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 2000 ml, Socket size: 45/40 NS, Height: 240 ± 7 mm, Ø ext.: 166 mm
UOM: 1 * 1 items
Product Image-201-0102

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 10000 ml, Socket size: 29/32 NS, Height: 375 ± 7 mm, Ø ext.: 279 mm

Catalog Number: (201-0102)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 10000 ml, Socket size: 29/32 NS, Height: 375 ± 7 mm, Ø ext.: 279 mm
UOM: 1 * 1 items
Product Image-271-1352

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 10000 ml, Socket size: 45/40 NS, Height: 420 ± 7 mm, Ext.Ø: 279 mm

Catalog Number: (271-1352)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 10000 ml, Socket size: 45/40 NS, Height: 420 ± 7 mm, Ext.Ø: 279 mm
UOM: 1 * 1 items
Product Image-201-1345

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 250 ml, Socket size: 45/40 NS, Height: 140 ± 6 mm, Ext.Ø: 85 mm

Catalog Number: (201-1345)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 250 ml, Socket size: 45/40 NS, Height: 140 ± 6 mm, Ext.Ø: 85 mm
UOM: 1 * 1 items
Product Image-271-1351

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 6000 ml, Socket size: 45/40 NS, Height: 360 ± 7 mm, Ext.Ø: 223 mm

Catalog Number: (271-1351)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 6000 ml, Socket size: 45/40 NS, Height: 360 ± 7 mm, Ext.Ø: 223 mm
UOM: 1 * 1 items
Product Image-271-1411

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

Catalog Number: (271-1411)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 1000 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ø ext.: 131 mm
UOM: 1 * 1 items
Product Image-201-1410

Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 1000 ml, Centre neck: 29/32 NS, Side necks: 14/23 NS, Ø ext.: 131 mm

Catalog Number: (201-1410)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 1000 ml, Centre neck: 29/32 NS, Side necks: 14/23 NS, Ø ext.: 131 mm
UOM: 1 * 1 items
Product Image-271-1409

Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 500 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ext.Ø: 105 mm

Catalog Number: (271-1409)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 500 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ext.Ø: 105 mm
UOM: 1 * 1 items
Product Image-201-0333

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

Catalog Number: (201-0333)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 2000 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ext.Ø: 166 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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