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.
Frequently Asked Questions
1. Why is borosilicate 3.3 glass preferred for laboratory work?
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.
2. Can Lenz ground joints be used without grease?
While standard glass joints often require grease for a vacuum seal, Lenz offers specialized PTFE sleeves and PTFE-coated stopcocks that allow for grease-free operation, preventing sample contamination.
3. Are Lenz glass components compatible with other brands?
Yes. Lenz manufactures its products to strict international standards (DIN 12242, ISO 383). This ensures that Lenz ground joints are fully compatible with any other high-quality glassware that follows the same standardized dimensions.
4. How should I clean my Lenz precision stopcocks?
Stopcocks should be cleaned with non-abrasive laboratory detergents. If using PTFE plugs, ensure they are removed before intensive cleaning. For glass plugs, ensure all old grease is removed using a suitable solvent like hexane or acetone before re-greasing.
