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 65 - 96 of 1401 results

Separating funnel 250 ml, NS 29/32 borosilicate glass 3.3, PTFE plug, conical, ungraduated, with PE stopper
In stock
Lenz-Laborglas Conical Separating Funnel, 250 mL NS 29/32 Borosilicate Glass 3.3, with PTFE Plug and PE Stopper

R 2,049.30

Inc. VAT

Part9.203 465
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Mfr
Separating funnel 50 ml, NS 19/26 borosilicate glass 3.3, PTFE plug, conical, graduated, with PE stopper
In stock
Lenz-Laborglas Separating Funnel 50ml, NS 19/26, Borosilicate Glass 3.3, PTFE Plug, Conical, Graduated, with PE Stopper

R 1,669.80

Inc. VAT

Part9.203 482
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Mfr
Stopcocks, Straight Bore with PTFE Plug , NS 12,5 Bore mm 1,5
In stock
Lenz-Laborglas Stopcocks, Straight Bore with PTFE Plug, NS 12.5, Bore Ø 1.5 mm

R 809.60

Inc. VAT

Part9.115 631
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Mfr
Stopcocks, Straight Bore with PTFE Plug , NS 12,5 Bore mm 2,5
In stock
Lenz-Laborglas Stopcocks Straight Bore, with PTFE Plug NS 12.5 Bore (mm) 2.5

R 809.60

Inc. VAT

Part6.070 033
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Mfr
Stopcocks, Straight Bore with PTFE Plug , NS 14,5 Bore mm 2,5
In stock
Lenz-Laborglas Straight-Bore Stopcock with PTFE Plug NS 14.5, Bore 2.5 mm

R 860.20

Inc. VAT

Part9.115 648
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Mfr
Stopcocks, Straight Bore with PTFE Plug , NS 14,5 Bore mm 4
In stock
Lenz-Laborglas Straight‐Bore Stopcock with PTFE Plug, NS 14.5, Bore 4.0 mm

R 1,062.60

Inc. VAT

Part9.115 634
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Mfr
Receiver Adapters, Straight, Socket/Cone NS 29/32
In stock
Lenz-Laborglas Straight Receiver Adapter (NS 29/32)

R 910.80

Inc. VAT

Part9.012 621
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Mfr
Test Tubes, Round Bottom with NS, Socket NS 14/23
In stock
Lenz-Laborglas Test Tube, Round Bottom, with NS Socket NS 14/23

R 151.80

Inc. VAT

Part9.190 410
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Mfr
Test Tubes, Round Bottom with NS, Socket NS 14/23
In stock
Lenz-Laborglas Test Tubes, Round Bottom with NS, Socket NS 14/23 Capacity 12 ml

R 253.00

Inc. VAT

Part9.190 416
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Test Tubes, Round Bottom with NS, Socket NS 14/23
In stock
Lenz-Laborglas Round Bottom Test Tube NS 14/23 Ø 18 mm × 180 mm, DURAN® Tubing, PE Stopper

R 303.60

Inc. VAT

Part9.190 418
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Mfr
Weighing Bottles with NS Cap, Tall Form, H. mm 35 NS 50/12
In stock
Lenz-Laborglas Weighing Bottles with NS Cap, Tall Form, H. mm 35 NS 50/12

R 1,214.40

Inc. VAT

Part6.206 112
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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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Mfr
Stirrer Guides with GL Male Thread, Cone NS 29/32 Thread GL 25
In stock
Lenz-Laborglas Stirrer Guide with GL Male Thread (NS 29/32, GL 25)

R 2,479.40

Inc. VAT

Part9.197 355
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Mfr
Weighing bottles,DURAN®,tall form,cap. 20 ml 30x50 mm
In stock
Lenz-Laborglas Weighing Bottles Duran Tall Form Cap, 20 mL (30x50 mm)

R 506.00

Inc. VAT

Part9.300 118
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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
Round-bottom Flask 500 ml, NS 29/32, DURAN®
In stock
Lenz-Laborglas Round Bottom Flask 500 mL NS 29/32, Duran

R 809.60

Inc. VAT

Part9.011 850
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Mfr
Round-bottom Flasks, 1000 ml, NS 29/32, DURAN®
In stock
Lenz-Laborglas Round Bottom Flask 1000 mL NS 29/32, Duran

R 1,138.50

Inc. VAT

Part9.011 855
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Mfr
Round-bottom Flasks with Conical Joint, Cap. ml 2000 Socket NS 29/32
In stock
Lenz-Laborglas Round Bottom Flasks with Conical Joint, Capacity 2000 mL Socket NS 29/32

R 1,922.80

Inc. VAT

Part9.011 860
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Mfr
Round-bottom Flasks with Conical Joint, Cap. ml 1000 Socket NS 45/40
In stock
Lenz-Laborglas Round Bottom Flasks with Conical Joint, Capacity 1000 mL Socket NS 45/40

R 2,175.80

Inc. VAT

Part9.011 869
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Mfr
Round-bottom Flasks, 500 ml, NS 29/32, DURAN®, pack of 10
In stock
Lenz-Laborglas Round-bottom Flasks, 500 ml, NS 29/32, DURAN, pack of 10

R 6,223.80

Inc. VAT

Part4.667 719
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Mfr
Round-bottom Flasks, 5 ml, NS 14/23, DURAN®, pack of 10
In stock
Lenz-Laborglas Round-bottom Flasks, 5 ml, NS 14/23, DURAN, Pack of 10

R 3,516.70

Inc. VAT

Part4.667 710
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Mfr
Funnels with Cone, Cone NS 14/23 O.D.mm 45
In stock
Lenz-Laborglas Funnels with Cone NS 14/23, OD 45mm

R 784.30

Inc. VAT

Part9.251 340
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Mfr
Funnels with Cone, Cone NS 29/32 O.D.mm 80
In stock
Lenz-Laborglas Funnels with Cone NS 29/32, OD 80mm

R 1,467.40

Inc. VAT

Part9.251 343
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Mfr
Round-bottom Flask 100 ml Three-neck, Side Necks Angled, Center Neck NS 29/32, Side Neck NS 14/23
In stock
Lenz-Laborglas Round Bottom Flask 100 mL Three Neck, Side Necks Angled, Center Neck NS 29/32, Side Neck NS 14/23

R 1,214.40

Inc. VAT

Part9.011 953
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Mfr
Round-bottom Flask 250 ml, NS 14/23, DURAN®
In stock
Lenz-Laborglas Round-Bottom Flask, 250 mL, NS 14/23, DURAN

R 784.30

Inc. VAT

Part9.011 815
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Mfr
Round-bottom Flasks, 50 ml, NS 29/32, DURAN®
In stock
Lenz-Laborglas Round Bottom Flasks, 50 mL, NS 29/32, DURAN

R 253.00

Inc. VAT

Part9.011 835
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Mfr
Round-bottom Flask 100 ml, NS 29/32, DURAN®
In stock
Lenz-Laborglas Round Bottom Flask, 100 mL, NS 29/32, DURAN

R 303.60

Inc. VAT

Part9.011 840
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Mfr
Round-bottom Flasks, 250 ml, NS 29/32, DURAN®
In stock
Lenz-Laborglas Round Bottom Flasks, 250 mL, NS 29/32, DURAN

R 607.20

Inc. VAT

Part9.011 845
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Mfr
Round-bottom Flasks, 25 ml, NS 14/23, DURAN®
In stock
Lenz-Laborglas 25 mL Round-Bottom Flask, with NS 14/23 Joint

R 202.40

Inc. VAT

Part9.011 802
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Mfr
Round-bottom Flasks with Conical Joint, Cap. ml 5000 Socket NS 29/32
In stock
Lenz-Laborglas Round-bottom Flasks With Conical Joint, Capacity 5000 ml Socket NS 29/32

R 4,756.40

Inc. VAT

Part9.011 864
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Mfr
Cones, NS 19/26
In stock
Lenz-Laborglas Cones NS 19/26

R 101.20

Inc. VAT

Part9.011 506
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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.