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 193 - 224 of 1401 results

Round-bottom Flasks, Two-neck, Side Neck Angled , C. Neck NS 14/23 Side Neck NS 14/23
In stock
Lenz-Laborglas Round Bottom Flask Two-Neck Angled C-Neck NS 14/23, Side Neck NS 14/23

R 784.30

Inc. VAT

Part9.011 901
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Mfr
Round-bottom Flasks, Two-neck, Side Neck Angled, C. Neck NS 29/32 Side Neck NS 14/23
In stock
Lenz-Laborglas Round Bottom Flasks Two Neck - Side Neck Angled, Center Neck NS29/32 Side Neck NS14/23

R 759.00

Inc. VAT

Part9.011 904
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Mfr
Dropping funnel 50 ml, NS 14/23 cyl. graduated, glass tap, w/o pressure balance
In stock
Lenz-Laborglas Dropping Funnel, 50 mL NS 14/23 Graduated Glass Tap, Without Pressure Balance

R 1,897.50

Inc. VAT

Part6.252 455
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Mfr
Dropping Funnels, Cylindrical , Cap. ml 25 Socket/Cone NS 14/23 Cap. 3000
In stock
Lenz-Laborglas Dropping Funnels, Cylindrical, Capacity 25 ml, Socket/Cone NS 14/23, Flask Capacity 3000 ml

R 1,897.50

Inc. VAT

Part9.012 731
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Mfr
Dropping Funnels, Cylindrical , Cap. ml 1000 Socket/Cone NS 29/32 Cap. 4000
In stock
Lenz-Laborglas Dropping Funnel, Cylindrical, 1000 mL, Socket/Cone NS 29/32, Flask Capacity 4000 mL, with Retaining Device

R 3,693.80

Inc. VAT

Part9.012 746
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Mfr
Dropping Funnels, Cylindrical , Cap. ml 100 Socket/Cone NS 14/23 Cap.
In stock
Lenz-Laborglas Dropping Funnel, Cylindrical, Capacity 100 mL, Socket/Cone NS 14/23,Capacity,with Retaining Device

R 2,074.60

Inc. VAT

Part6.401 645
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Drying Tubes with Cone, Bent , Cone NS 29/32
In stock
Lenz-Laborglas Drying Tube with Cone, Bent Cone NS 29/32

R 1,037.30

Inc. VAT

Part9.012 703
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Drying Tubes with Cone, Bent , Cone NS 14/23
In stock
Lenz-Laborglas Bent Drying Tube, with Cone (NS 14/23)

R 784.30

Inc. VAT

Part9.012 701
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Sprayers, Complete,
In stock
Lenz-Laborglas Sprayers, Complete

R 2,555.30

Inc. VAT

Part6.202 962
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Screwthread Tubes with NS Cone, GL 18 Cone NS 29/32
In stock
Lenz-Laborglas Screwthread Tubes with NS Cone, GL 18, Cone NS 29/32

R 354.20

Inc. VAT

Part9.209 529
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Mfr
Screwthread Tubes with NS Cone, GL 18 Cone NS 14/23
In stock
Lenz-Laborglas Screwthread Tube, with NS Cone GL 18 Cone NS 14/23

R 303.60

Inc. VAT

Part9.209 518
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Mfr
Measuring tube with tap, 10ml: 1/101 ml, Zero Zero point at the tap, Core + sleeve NS 29/32
In stock
Lenz-Laborglas Measuring Tube with Tap, 10 ml: 1/101 ml, Zero Point at the Tap, Core + Sleeve NS 29/32

R 4,655.20

Inc. VAT

Part6.072 332
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Mfr
Separating Funnels, Gilson , Cap. ml 100 Socket NS 19/26 Cap.ml 3000
In stock
Lenz-Laborglas Separating Funnels, Gilson, Capacity 100 ml Socket NS 19/26 Capacity 3000 ml

R 3,137.20

Inc. VAT

Part6.204 303
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Separating funnel acc.Gilson 1000 ml massive glass tap, NS 29/32, hole 6,0mm, Boro 3.3
In stock
Lenz-Laborglas Separating Funnel acc. Gilson, 1000 ml, Massive Glass Tap, NS 29/32, Hole 6,0 mm, Boro 3.3

R 5,338.30

Inc. VAT

Part6.253 678
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Mfr
Stopcocks, Straight Bore with Solid Glass Plug , NS 12,5 Bore mm 1,5
In stock
Lenz-Laborglas Stopcocks, Straight Bore with Solid Glass Plug, NS 12,5 Bore mm 1,5

R 607.20

Inc. VAT

Part9.115 611
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Mfr
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
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, Side Necks Parallel, C. Neck NS 29/32, Side Necks NS 29/32, Ø 85 mm

R 1,796.30

Inc. VAT

Part9.011 936
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Mfr
Silicone Rubber Sealings with Bore, GL 14 O.D. mm 12x6
In stock
Lenz-Laborglas Silicone Rubber Sealings with Bore GL 14, OD 12x6

R 126.50

Inc. VAT

Part9.244 310
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Mfr
Silicone Rubber Sealings with Bore , GL 25 O.D. mm 22x8
In stock
Lenz-Laborglas Silicone Rubber Sealings with Bore, GL 25 O.D. mm 22×8

R 354.20

Inc. VAT

Part6.226 787
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Mfr
Round-bottom Flasks, 10 ml, NS 14/23, DURAN®, pack of 10
In stock
Lenz-Laborglas Round Bottom Flasks, 10 mL NS 14/23 Duran, Pack of 10

R 1,771.00

Inc. VAT

Part4.667 711
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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
Distilling Links with Liebig Condenser and Vacuum Receiver Adapter , Cone NS 29/32 Jacket L. mm 400
In stock
Lenz-Laborglas Distilling Links with Liebig Condenser and Vacuum Receiver Adapter, Cone NS 29/32, Jacket L: 400 mm

R 5,060.00

Inc. VAT

Part9.012 268
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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
Plastic Hose Connections, bent
In stock
Lenz-Laborglas Plastic Hose Connections, Bent 2

R 75.90

Inc. VAT

Part6.224 328
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Mfr
Cones, NS 14/23
In stock
Lenz-Laborglas Conical Ground Cone, NS 14/23

R 101.20

Inc. VAT

Part9.011 505
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Cones, NS 12/21
In stock
Lenz-Laborglas Cones NS 12/21

R 151.80

Inc. VAT

Part9.011 504
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Mfr
Round-bottom Flasks with Conical Joint, Amber, Cap. ml 250 Socket NS 29/32
In stock
Lenz-Laborglas Round-bottom Flasks With Conical Joint, Amber, Capacity 250 ml, Socket NS 29/32

R 2,808.30

Inc. VAT

Part9.011 828
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Mfr
Stopcocks, Straight Bore with Solid Glass Plug , NS 12,5 Bore mm 2,5
In stock
Lenz-Laborglas Stopcocks, Straight Bore with Solid Glass Plug, NS 12,5 Bore mm 2,5

R 607.20

Inc. VAT

Part9.115 642
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Mfr
Stopcocks, Straight Bore with Solid Glass Plug , NS 14,5 Bore mm 4
In stock
Lenz-Laborglas Stopcocks, Straight Bore with Solid Glass Plug, NS 14,5 Bore mm 4

R 683.10

Inc. VAT

Part9.115 614
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Mfr
Socket Members, Inch Range, KS 35
In stock
Lenz-Laborglas Socket Members, Inch Range, KS 35

R 480.70

Inc. VAT

Part9.011 613
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Mfr
Funnels, Plain, O.D.mm 100
In stock
Lenz-Laborglas Funnels, Plain, O.D. mm 100

R 303.60

Inc. VAT

Part6.230 045
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Mfr
Disposable grinding collar, NS 24/29 thin walls, PTFE
In stock
Lenz-Laborglas Disposable Grinding Collar NS 24/29 Thin Walls PTFE

R 202.40

Inc. VAT

Part6.243 030
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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.