Burette, Borosilicate Glass, with PTFE Stopcock Manufacturer,Supplier and Exporter in India
Product Code : EL-B-1593
Jlab Export is a leading Burette, Borosilicate Glass, with PTFE Stopcock Manufacturer,and suppliers in India
Burette, Borosilicate Glass, with PTFE Stopcock (Product Code: EL-B-1593) is a 50 ml graduated borosilicate glass burette with a PTFE stopcock, used to deliver measured volumes of titrant in school, college and university chemistry laboratories. Its blue enamel graduations are easy to read at the bench, and replacement stopcock keys are available if a key is lost or damaged. It is manufactured by Jain Laboratory Instruments Pvt Ltd (JLab), an OEM laboratory glassware manufacturer in India, at its own works in Ambala, Haryana.
Specifications
| Parameter | Detail |
|---|---|
| Capacity | 50 ml |
| Material | Borosilicate glass |
| Stopcock | PTFE stopcock |
| Graduations | Blue enamel, easy to read |
| Stopcock keys | Fully interchangeable; replacement keys available in the event of loss or damage |
| Product code | EL-B-1593 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Borosilicate Glass Burette Used For?
A burette is the measuring vessel in a titration: it delivers the titrant drop by drop until the reaction reaches its end point, and the volume used is read from the graduations. This 50 ml burette is a core piece of chemistry lab glassware for the acid–base and redox titrations in class 11 and class 12 chemistry practicals, such as finding the strength of a sodium hydroxide solution against standard oxalic acid, and for the volumetric analysis exercises run in college and university teaching labs. Schools building a titration kit or a volumetric analysis kit pair it with a conical flask, a pipette, a burette stand and a burette clamp.
In use, rinse the burette with distilled water and then with a little of the titrant, clamp it vertically, and fill it above the zero mark. Open the PTFE stopcock briefly to clear air from the tip, then take the first reading from the bottom of the meniscus at eye level. Record the initial and final readings for every run, and repeat until concordant values are obtained.
Borosilicate glass resists most laboratory chemicals and sudden temperature changes better than ordinary soda-lime glass, and the PTFE stopcock does not need grease to turn smoothly. After each session, drain the burette, wash it with a burette brush and distilled water, and store it upside down in a stand. Avoid leaving strong alkaline solutions standing in the tube for long periods, as they slowly attack glass.
What to Specify When Ordering
- Stopcock type — this model has a PTFE stopcock; an all-PTFE stopcock version is listed separately (see Related Burettes below).
- Quantity — many schools plan one burette per student pair at each titration bench, plus a few spares for breakages.
- Spare stopcock keys — keys are fully interchangeable, so ordering a few spares with the burettes keeps the set in service.
- Burette stand and burette clamp — order them with the burettes so that each chemistry bench is complete on delivery.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a laboratory equipment manufacturer incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. This borosilicate burette is made at JLab’s own works in Ambala rather than bought in from a trader, so schools, colleges, dealers and importers receive it factory-direct, and repeat orders and spare keys are handled by the manufacturer itself. JLab makes the burette alongside the rest of its chemistry lab glassware and school lab equipment, which lets a buyer source burettes, stands, clamps and titration flasks from one lab glassware manufacturer and supplier in India.
JLab exports its laboratory glassware worldwide and ships to schools, distributors and importers in every region — for example Greece in Southern Europe, Indonesia in Southeast Asia, Senegal in West Africa, Fiji in Oceania and Belize in Central America and the Caribbean. Institutions and dealers preparing a laboratory tender can find details on the JLab lab tenders page.
Related Burettes and Titration Accessories
These items complete a titration set-up or offer an alternative to the 50 ml PTFE-stopcock burette:
- Burette, Borosilicate Glass, with all PTFE Stopcock — the sister 50 ml model for buyers who prefer an all-PTFE stopcock.
- Burette Stopcocks, PTFE Key, Straight Through — a spare borosilicate stopcock with a PTFE key for repairing burettes.
- Burette Stand — a weighted polypropylene-base stand that holds the burette vertically during a titration.
- Mild Steel Burette Clamp — a powder-coated clamp with boss head for fixing a burette to a retort stand.
- Nylon Burette Cleaning Brush — for cleaning the inside of the burette tube after each practical.
- Microburette — an individually calibrated borosilicate burette for work that needs finer readings.
See every model in our Burettes range, or browse the full Lab Glassware range of borosilicate glassware made in India.
Frequently Asked Questions
What is the capacity of the Burette, Borosilicate Glass, with PTFE Stopcock?
The Burette, Borosilicate Glass, with PTFE Stopcock has a capacity of 50 ml. It is made of borosilicate glass and carries blue enamel graduations that are easy to read during a titration.
Why choose a PTFE stopcock on a glass burette?
A PTFE stopcock resists most laboratory acids, alkalis and solvents and turns without stopcock grease, so it is less likely to stick or contaminate the titrant than a greased glass key. That makes this borosilicate burette easier for students to control drop by drop.
Can the stopcock key of this burette be replaced?
Yes. The specification states that replacement keys are available in the event of loss or damage and that the keys are fully interchangeable. Spare keys come direct from JLab as the manufacturer, so a school or college set stays in use.
Which experiments is the 50 ml borosilicate burette used for?
The 50 ml borosilicate burette is used for acid–base and redox titrations, including the volumetric analysis practicals in class 11 and class 12 chemistry and in college teaching labs. In a school titration kit it is paired with a conical flask, a pipette and a burette stand.
Who manufactures the Burette, Borosilicate Glass, with PTFE Stopcock?
The Burette, Borosilicate Glass, with PTFE Stopcock is manufactured by Jain Laboratory Instruments Pvt Ltd, which trades as JLab, at its own works in Ambala, Haryana, India. JLab is an OEM manufacturer and supplies it factory-direct to schools, colleges, laboratories and dealers.
Is JLab a laboratory glassware manufacturer in India?
Yes. JLab is a laboratory glassware manufacturer in India that makes borosilicate glassware such as this PTFE-stopcock burette at its Ambala works, together with other chemistry lab equipment for schools, colleges and universities.
Do you export the PTFE stopcock burette?
Yes. JLab exports the PTFE stopcock burette and its other laboratory glassware worldwide, including to buyers in Southern Europe, Southeast Asia, West Africa and Oceania. Send your quantity and destination country through the contact page for a quotation with shipping details.
What details should a tender specification for this burette include?
A tender specification for this burette can state a 50 ml capacity, borosilicate glass, a PTFE stopcock, blue enamel graduations and interchangeable keys with replacements available, which are the details listed for product code EL-B-1593.
Request a Quote
Quotes for the Burette, Borosilicate Glass, with PTFE Stopcock come direct from the manufacturer. Add it to your enquiry with the Add To Cart button on this page, or send the quantity, any spare keys or accessories you need, and your delivery location through our contact page.
Last updated: 24 September 2026
