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Burette, Screw Type Glass Key
Low-Expansion Borosilicate 3.3 Matrix: Fabricated from premium Type I glass with a linear expansion coefficient of 3.3 x 10-6 K-1, ensuring superior thermal shock resistance and minimal ion leaching during prolonged exposure to aggressive acidic or alkaline reagents.
Micro-Controlled Screw-Type Stopcock: Features a precision-ground glass key integrated with a specialized screw-adjustment mechanism, allowing for infinitesimal drop-wise flow control and a leak-proof hermetic seal that maintains calibration integrity over intensive laboratory cycles.
₹300.00
Quick answer: This Burette uses a screw-type glass stopcock mechanism, giving fine, controlled adjustment of liquid delivery during titration. Burette, Screw Type Glass Key is priced at approximately ₹300 (indicative market benchmark, incl. GST, August 2026).
A burette is a long, graduated glass tube used to deliver a precisely measured, variable volume of liquid reagent during a titration. This version uses a screw-type glass key mechanism, where turning a threaded screw incrementally opens or closes the stopcock, giving fine, controlled adjustment of flow rate. Made from borosilicate 3.3 glass for chemical resistance, it’s a standard instrument for titration in college and research analytical chemistry laboratories.
Technical Specifications
| Parameter | Detail |
|---|---|
| Product Type | Burette, screw-type glass key (stopcock) |
| Function | Fine, controlled delivery of liquid reagent during titration |
| Stopcock Type | Screw-type glass key |
| Construction | Borosilicate 3.3 glass |
| Exact capacity/graduation increments | Not independently verified for this listing — confirm with STEMAids before ordering |
| Price | Approx. ₹300 (indicative market benchmark, incl. GST, August 2026) |
| Exact dimensions/technical detail | Not independently verified for this listing — confirm with STEMAids before specifying in a tender |
Applications
- Acid-base and other titrations requiring fine flow control
- Analytical chemistry practicals
- College and research chemistry laboratory volumetric analysis
- General-purpose controlled liquid dispensing
Care & Maintenance
- Grease the glass screw-key stopcock lightly to keep it turning smoothly and sealing well
- Clean thoroughly after each use to prevent residue from affecting future readings
- Store upright, ideally on a burette stand, to protect the graduated tube
Why Choose STEMAids
STEMAids supplies a wide range of Chemistry Lab Equipments including Conductivity Tester for related laboratory and classroom needs. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and ISO 9001:2015 certified, supplying schools, colleges and vocational institutes across India and for export.
Frequently Asked Questions
What is a screw-type glass key burette used for?
It’s used for titration, giving fine, incremental control over reagent flow rate via a threaded screw mechanism on the glass stopcock.
What capacity does this burette hold?
The exact capacity and graduation increments have not been independently verified for this listing — confirm with STEMAids before ordering.
What’s the difference between this and a straight bore glass key burette?
The screw-type mechanism gives finer, more incremental flow adjustment compared to a straight-bore key, which is a simpler on/off style stopcock.
Is this suitable for a college chemistry teaching lab?
Yes — burettes of this kind are standard equipment for titration practicals in analytical chemistry coursework.
Does STEMAids supply matching burette stands and clamps?
Contact STEMAids to confirm compatible support equipment for a complete titration setup.
Is STEMAids a registered manufacturer of this product?
Yes. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and is ISO 9001:2015 certified. See the About page for full registration and certification details — manufacturer-stated, verify before citing in procurement documents.
Last updated: 29 August 2026.
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