Laboratory Glass Stopcocks Manufacturer, Suppliers and Exporter in India

Lab Glassware Manufacturer is leading Laboratory Glass Stopcocks Manufacturer,and supplier and Exporter in Amabla India

Lab Glassware Manufacturer is a leading India-based Laboratory Glass Stopcocks manufacturer, supplier and exporter, headquartered in Ambala, Haryana, and serving laboratory glassware buyers since 1982. Our glass stopcocks are exported to institutional and industrial buyers across North Macedonia, Albania and Serbia, supporting laboratory procurement throughout the Southern Balkans region.

Quick Answer: Laboratory Glass Stopcocks are valves fitted into burettes and other glassware to control the flow of liquid or gas, available with either a ground-glass key or a PTFE (polytetrafluoroethylene) key, and in straight-bore or needle-valve designs. Lab Glassware Manufacturer supplies both stopcock types to schools, colleges, research laboratories and industrial buyers, either fitted to a burette or as a standalone replacement part.

Glass Key vs. PTFE Key Stopcocks: Which to Choose

A stopcock's key – the rotating plug that opens and closes the flow path – can be ground glass or PTFE, and the choice affects both maintenance and chemical compatibility. A glass key seals by a precision ground-glass fit against the stopcock barrel and typically needs a thin film of stopcock grease to turn smoothly and seal reliably; it offers excellent chemical resistance but can seize if left dry or unused for long periods. A PTFE key is self-lubricating, needs no grease, and resists a wider range of aggressive reagents, making it a common choice for laboratories running frequent titrations or handling corrosive solutions. Both key types are available in straight-bore and needle-valve configurations, and either fitted to a burette or supplied as a standalone stopcock. Lab Glassware Manufacturer's Laboratory Glass Stopcocks, Ambala, Haryana, India, are manufactured under Lab Glassware Manufacturer's ISO 9001 and ISO 13485 certified quality management system; buyers should always request current, product-specific compliance documentation before relying on any certification or standard claim in a tender file.

Frequently Asked Questions

What is the difference between a glass key and a PTFE key stopcock?
A glass key seals by a precision ground-glass fit and typically needs stopcock grease, while a PTFE key is self-lubricating and needs no grease, offering broader chemical resistance for frequent or corrosive use.

What is a needle-valve stopcock?
It is a stopcock design that allows fine, precise control over flow rate, useful for slow or dropwise titration work rather than a simple fully-open or fully-closed straight-bore design.

Are these stopcocks sold separately from a burette?
Yes, Lab Glassware Manufacturer supplies stopcocks both fitted to a complete burette and as standalone replacement parts for burettes already in service.

What material are the stopcock bodies made from?
The stopcock bodies are manufactured from Borosilicate Glass, valued in laboratory glassware for its chemical resistance and dimensional stability.

Does Lab Glassware Manufacturer export Laboratory Glass Stopcocks to the Balkans?
Yes, Lab Glassware Manufacturer, based in Ambala, Haryana, India and manufacturing laboratory glassware since 1982, exports Laboratory Glass Stopcocks to institutional and industrial buyers in North Macedonia, Albania, Serbia and other Southern Balkan markets.

Related Categories

Glass Stopcocks | Glassware Burette | Glass Burette | Laboratory Glass Joints

Request a Quote

For pricing, bulk-order and export enquiries on Laboratory Glass Stopcocks, contact Lab Glassware Manufacturer via our Contact Us page, or view current institutional and government supply opportunities on our Tenders page.

Last updated: September 2026