Lenz-Laborglas

Lenz Laborglas GmbH & Co. KG is a world-renowned German manufacturer of high-precision laboratory glassware, headquartered in Wertheim. Founded in 1929, the company has spent nearly a century perfecting the art of glassblowing, driven by the mission to provide "Precision in Glass." Lenz is internationally recognized as the market leader for standardized ground joints, stopcocks, and complex glass components essential for chemical and pharmaceutical research. By exclusively utilizing high-performance DURAN® borosilicate glass 3.3 from SCHOTT, the brand ensures that its products offer maximum thermal shock resistance and chemical durability. Today, Lenz remains a family-owned enterprise that combines traditional craftsmanship with ultra-modern CNC grinding and finishing technologies, delivering "Made in Germany" quality that forms the backbone of sophisticated distillation and extraction systems worldwide.

 

The Lenz range at LabFriend features professional distillation and separation solutions, headlined by their world-class conical ground joints, adapters, and round-bottom flasks. These components are essential for building modular, leak-proof glass apparatus for organic synthesis. For specialized fluid control, the brand provides advanced general laboratory aids, featuring high-precision PTFE and glass stopcocks designed for vacuum and pressure applications. Their portfolio also encompasses essential analytical measurement support, including specialized extraction apparatus (Soxhlet) and filtration units engineered for high-purity results. To support advanced research setups, Lenz offers silver-jacketed high-vacuum columns and specialized reactor lids tailored to specific experimental requirements. By choosing Lenz through LabFriend, you benefit from competitive pricing and fast shipping on premium borosilicate technology designed for absolute precision and long-term durability.

 

Why Choose Lenz for Your Laboratory?

  • World-Leading Ground Joint Precision: Lenz is the global benchmark for conical and spherical ground joints, ensuring a perfect, vacuum-tight fit across all modular glass components.
  • Premium DURAN® Material: By using only SCHOTT DURAN® borosilicate glass 3.3, Lenz products provide the highest possible resistance to water, neutral and acid solutions, and high temperatures.
  • Advanced Manufacturing Technology: The integration of CNC-controlled grinding machines ensures that every joint and stopcock adheres to strict DIN and ISO tolerances for unmatched reproducibility.
  • Extreme Chemical & Thermal Resistance: Engineered for the most demanding environments, Lenz glassware can withstand rapid temperature changes and contact with aggressive reagents without leaching or cracking.
  • Comprehensive Modular System: With thousands of standardized components, Lenz allows scientists to build complex, customized glass assemblies that are easily interchangeable and expandable.

Showing 161 - 192 of 1401 results

Flat Bottom Flasks with Conical Joint, Cap. ml 100 Socket NS 29/32
In stock
Lenz-Laborglas Flat Bottom Flasks With Conical Joint, Capacity 100 ml Socket NS 29/32

R 303.60

Inc. VAT

Part9.011 983
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Mfr
Flat Bottom Flasks with Conical Joint, Cap. ml 250 Socket NS 29/32
In stock
Lenz-Laborglas Flat Bottom Flasks With Conical Joint, Capacity 250 ml Socket NS 29/32

R 607.20

Inc. VAT

Part9.011 984
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Mfr
Flat Bottom Flasks with Conical Joint, Cap. ml 500 Socket NS 29/32
In stock
Lenz-Laborglas Flat Bottom Flasks with Conical Joint, Capacity 500 mL Socket NS 29/32

R 1,138.50

Inc. VAT

Part9.011 985
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Flat Bottom Flasks with Conical Joint, Cap. ml 1000 Socket NS 29/32
In stock
Lenz-Laborglas Flat Bottom Flasks with Conical Joint, Capacity 1000 mL Socket NS 29/32

R 1,619.20

Inc. VAT

Part9.011 986
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Mfr
Gas Washbottle Heads without Filter Disc,
In stock
Lenz-Laborglas Gas Washbottle Head, without Filter Disc

R 607.20

Inc. VAT

Part9.110 380
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Needle-valve Stopcocks for Desiccators, for Side Tubulation, Cone NS 24/29 Bore mm NW 2,5
In stock
Lenz-Laborglas Needle-Valve Stopcocks For Desiccators, For Side Tubulation, Cone NS 24/29, Bore NW 2.5 mm

R 1,163.80

Inc. VAT

Part9.042 500
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Socket Members, Inch Range, KS 19
In stock
Lenz-Laborglas Socket Members Inch Range KS 19

R 354.20

Inc. VAT

Part9.011 605
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Socket Members, Inch Range, KS 29
In stock
Lenz-Laborglas Socket Members Inch Range KS29

R 404.80

Inc. VAT

Part9.011 609
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Separating Funnels, Gilson , Cap. ml 500 Socket NS 29/32 Cap.ml 5000
In stock
Lenz-Laborglas Separating Funnel, Gilson, Cap. ml 500, Socket NS 29/32, Cap. ml 5000

R 3,997.40

Inc. VAT

Part6.232 732
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KECK Grinding clamp NS 29 nickel
In stock
Lenz-Laborglas Keck Grinding Clamp NS 29 Nickel

R 404.80

Inc. VAT

Part6.236 649
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KECK Grinding clamp NS 14/23 nickel
In stock
Lenz-Laborglas Keck Grinding Clamp NS 14/23 Nickel

R 354.20

Inc. VAT

Part6.236 648
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Screwthread Tubes for Glassblowers , GL 18
In stock
Lenz-Laborglas Screwthread Tube for Glassblowers GL 18

R 75.90

Inc. VAT

Part9.209 718
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Screwthread Tubes for Glassblowers , GL 45
In stock
Lenz-Laborglas Screwthread Tubes for Glassblowers, GL 45

R 657.80

Inc. VAT

Part9.209 735
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Mfr
Screwthread Tubes for Glassblowers , GL 25
In stock
Lenz-Laborglas Screwthread Tubes for Glassblowers, GL 25

R 126.50

Inc. VAT

Part9.209 725
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Mfr
Reduction and Expansion Adapters with Ground Joint, Socket NS 29/32 Cone NS 45/40
In stock
Lenz-Laborglas Reduction and Expansion Adapters with Ground Joint, Socket NS 29/32, Cone NS 45/40

R 1,087.90

Inc. VAT

Part9.011 765
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Mfr
Reduction and Expansion Adapters with Ground Joint, Socket NS 14/23 Cone NS 29/32
In stock
Lenz-Laborglas Reduction and Expansion Adapter with Ground Joints (Socket NS 14/23, Cone NS 29/32)

R 379.50

Inc. VAT

Part9.011 755
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Mfr
Weighing bottles,DURAN®,low form,cap. 15 ml 40x25 mm
In stock
Lenz-Laborglas Weighing Bottles, DURAN, Low Form, Cap. 15 ml, 40x25 mm

R 581.90

Inc. VAT

Part9.300 021
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Weighing bottles,DURAN®,low form,cap. 6 ml 25x25 mm
In stock
Lenz-Laborglas Weighing Bottles Duran Low Form Cap, 6 mL (25x25 mm)

R 531.30

Inc. VAT

Part9.300 022
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Mfr
Weighing bottles,DURAN®,low form,cap. 15 ml 35x30 mm
In stock
Lenz-Laborglas Weighing Bottles Duran Low Form Cap, 15 mL (35x30 mm)

R 531.30

Inc. VAT

Part9.300 023
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Mfr
Weighing bottles,DURAN®,low form,cap. 30 ml 50x30 mm
In stock
Lenz-Laborglas Weighing Bottles Duran Low Form Cap, 30 mL (50x30 mm)

R 632.50

Inc. VAT

Part9.300 032
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Mfr
Weighing bottles,DURAN®,low form,cap. 45 ml 60x30 mm
In stock
Lenz-Laborglas Weighing Bottles, DURAN, Low Form, Cap. 45 ml, 60x30 mm

R 784.30

Inc. VAT

Part9.300 037
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Mfr
Weighing bottles,DURAN®,low form,cap. 80 ml 80x30 mm
In stock
Lenz-Laborglas Weighing Bottles Duran Low Form Cap, 80 mL (80x30 mm)

R 1,315.60

Inc. VAT

Part9.300 041
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Mfr
Weighing bottles,DURAN®,tall form,cap. 110 ml 50x80 mm
In stock
Lenz-Laborglas Weighing Bottles, DURAN, Tall Form, Cap. 110 ml, 50x80 mm

R 733.70

Inc. VAT

Part9.300 127
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Mfr
Weighing Bottles with NS Stopper, High Form, H. mm 50 AD.mm 40
In stock
Lenz-Laborglas Weighing Bottle With NS Stopper, High Form, H. 50 mm, AD. 40 mm

R 759.00

Inc. VAT

Part9.300 357
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Mfr
Multiple Adapters, 2 Necks , Socket NS 29/32 Cone NS 29/32
In stock
Lenz-Laborglas & Co. KG Multiple Adapters 2 Necks, Socket NS 29/32, Cone NS 29/32

R 1,340.90

Inc. VAT

Part9.012 123
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Mfr
Round-bottom Flask 500 ml Three-neck, Side Necks Angled, Center Neck NS 29/32, Side Neck NS 14/23
In stock
Lenz-Laborglas Round Bottom Flask 500 mL Three Neck, Side Necks Angled, Center Neck NS 29/32, Side Neck NS 14/23

R 1,619.20

Inc. VAT

Part9.011 958
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Mfr
Round-bottom Flasks, 50ml, Three-neck Side necks angled, C.nech NS 14/23 Side Neck NS 14/23 Cap.
In stock
Lenz-Laborglas Round Bottom Flasks, 50 mL Three Neck Side Necks Angled C Neck NS14/23 Side Neck NS14/23 Cap

R 1,796.30

Inc. VAT

Part6.077 726
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Mfr
Stirrer Guides with GL Male Thread, Cone NS 45/40 Thread GL 25
In stock
Lenz-Laborglas Stirrer Guides with GL Male Thread Cone (NS 45/40, GL 25)

R 3,036.00

Inc. VAT

Part6.223 283
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Nitrogen-Tubes (Schlen-Tubes) 250 ml, socket, NS 14/23 PTFE-valve plug hole 2,5mm
In stock
Lenz-Laborglas Nitrogen Tubes (Schlenk Tubes) 250 ml, Socket NS 14/23, PTFE Valve Plug Hole 2.5 mm

R 3,440.80

Inc. VAT

Part7.980 133
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Round-bottom Flasks, Three-neck, Side Necks Parallel, C. Neck NS 29/32 Side Neck NS 29/32
In stock
Lenz-Laborglas Round-Bottom Flasks, Three-Neck, NS 29/32

R 2,074.60

Inc. VAT

Part9.011 939
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Round-bottom Flasks, Two-neck, Side Neck Angled, C. Neck NS 29/32 Side Neck NS 14/23
In stock
Lenz-Laborglas Round Bottom Flask with Two Neck, Side Neck Angled C-Neck NS 29/32, Side Neck NS 14/23

R 1,087.90

Inc. VAT

Part9.011 906
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Mfr
Round-bottom Flasks, Two-neck, Side Neck Angled, C. Neck NS 29/32 Side Neck NS 29/32
In stock
Lenz-Laborglas Round-Bottom Flasks, Two-Neck, NS 29/32

R 1,846.90

Inc. VAT

Part9.011 920
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Mfr

Frequently asked questions

Borosilicate 3.3 glass has a very low coefficient of linear expansion. This makes it highly resistant to thermal shock, allowing it to be heated and cooled rapidly without the risk of breaking compared to standard soda-lime glass.