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Glass Stopcocks Manufacturer, Suppliers and Exporter in India

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

Glass Stopcocks from Lab Glassware Manufacturer are individual valves with ground-glass or PTFE keys, supplied fitted for burette use or as standalone replacement parts. A straight-bore stopcock gives simple open-or-closed flow, while a needle-valve design allows fine, dropwise control. PTFE keys are self-lubricating and suit frequent or corrosive use; a ground-glass key gives a precision fit but usually needs stopcock grease. The PTFE Needle Valve Stopcock, Automatic Burette is made for automatic burette assemblies, which typically refill from a reservoir bottle.

Last updated: October 2026.

Frequently Asked Questions

What is the difference between a straight-bore and a needle-valve stopcock?
A straight-bore stopcock is a simple open-or-closed valve, while a needle-valve stopcock allows fine, precise control over flow rate for slow or dropwise dispensing.

What is an "automatic burette" stopcock?
It is a stopcock variant fitted for use on automatic burette assemblies, which typically refill from a reservoir bottle rather than being manually topped up.

Do I need to order the stopcock with a full burette?
No, Lab Glassware Manufacturer supplies stopcocks both fitted to a complete burette and as standalone replacement parts for burettes already in service.

Which key type should I choose, glass or PTFE?
A PTFE key is self-lubricating and suits frequent or corrosive use, while a ground-glass key offers a precision fit and excellent chemical resistance but typically needs stopcock grease.