Glass Key Stopcock For Burette
Product Code : EL-GS-10262
Quick Answer: A Glass Key Stopcock For Burette is a ground-glass valve fitted into a burette to control the flow of titrant during titration and other liquid-dispensing laboratory work. Its ground-glass key seals against the stopcock barrel by precision fit and typically needs a thin film of stopcock grease to turn smoothly and seal reliably, offering excellent chemical resistance for a wide range of reagents.
| Specification | Detail |
|---|---|
| Product Name | Glass Key Stopcock For Burette |
| Key Type | Ground glass |
| Bore Size | 0–3 mm |
| Fitting | Fitted for burette use |
| Material | Borosilicate Glass |
| Export Markets | San Marino, Monaco, Andorra and other smaller European states |
Maintaining a Glass Key Stopcock
A ground-glass key stopcock delivers excellent chemical resistance and a precision seal, but unlike a PTFE-key stopcock it typically needs a thin film of stopcock grease applied periodically to turn smoothly and prevent the key from seizing if left dry or unused for extended periods. Buyers running frequent titrations with aggressive reagents, or who prefer a grease-free valve, may instead consider Lab Glassware Manufacturer's PTFE Key Stopcock Burette, which is self-lubricating.
Frequently Asked Questions
What bore size does this stopcock come in?
Lab Glassware Manufacturer states a bore size of 0–3 mm for this stopcock.
Does a glass key stopcock need maintenance?
Yes, it typically needs a thin film of stopcock grease applied periodically to turn smoothly and prevent seizing if left dry or unused for long periods.
Is this stopcock sold fitted to a burette or separately?
This listing is for the stopcock fitted for burette use; Lab Glassware Manufacturer also supplies standalone replacement stopcocks separately.
Related Products
PTFE Key Stopcock Burette | Glass Straight Stopcock | Glass Stopcocks | Laboratory Glass Stopcocks
Request a Quote
For pricing, bulk-order and export enquiries on the Glass Key Stopcock For Burette, 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