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 (code EL-B-1593) is a 50 ml borosilicate glass burette with a PTFE stopcock and blue enamel graduations, used for titrations in school, college and university chemistry labs. Replacement stopcock keys are available. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Capacity | 50 ml |
| Material | Borosilicate glass |
| Stopcock | PTFE stopcock |
| Stopcock keys | Fully interchangeable; replacement keys available in the event of loss or damage |
| Graduations | Blue enamel, easy to read |
| Graduation interval and tolerance class | Supplied to the customer’s requirement — specify the graduation interval and the class (for example Class A or Class B) in your enquiry |
| Calibration certificate | Supplied with Class A burettes |
| Quality check | Each burette is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| This listing covers | The burette with its PTFE stopcock; stand, clamp and cleaning brush are separate catalogue items |
| Product code | EL-B-1593 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Burettes?
| Model | Capacity | Body | Stopcock and other listed details |
|---|---|---|---|
| This burette (EL-B-1593) | 50 ml | Borosilicate glass | PTFE stopcock; interchangeable, replaceable keys; blue enamel graduations; graduation interval and class (A or B) to order |
| Burette, Borosilicate Glass, with all PTFE Stopcock | 50 ml | Borosilicate glass | All-PTFE stopcock |
| Burette PTFE Stopcock | 25 ml | Borosilicate glass | PTFE stopcock; heat and chemical resistant; graduated |
| Microburette | 50 x 0.1 ml (as listed) | Borosilicate glass | Single-bore stopcock; each burette individually calibrated |
| Burette (acrylic) | 25, 50 and 100 ml (packs of 10) | Transparent acrylic (PMMA/TPX) | Leak-proof stopcock with self-lubricating PTFE plug; individually calibrated |
Choose this model for general teaching titrations where you want a 50 ml glass burette with replaceable stopcock keys. The all-PTFE version suits buyers who prefer the whole stopcock in PTFE, the 25 ml model suits smaller-volume work, the microburette is listed as individually calibrated, and the acrylic burette avoids glass breakage but, according to its own specification, should not be used with hydrofluoric acid or ammonium hydroxide.
What Is the Borosilicate Glass Burette Used For?
A burette delivers the titrant drop by drop until a reaction reaches its end point, and the volume used is read from the graduations. This 50 ml burette is standard 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 volumetric analysis in college and university teaching labs. In a school titration kit it sits with a conical flask, a pipette, a burette stand and a burette clamp.
To use it, rinse the burette with distilled water and then with a little titrant, clamp it vertically, fill it above the zero mark, and open the stopcock briefly to clear air from the tip. Read the bottom of the meniscus at eye level before and after each run. Borosilicate glass resists most laboratory chemicals and sudden temperature changes better than soda-lime glass, and the PTFE stopcock turns without grease. After use, drain and wash the burette with a burette brush, store it upside down, and do not leave strong alkaline solutions standing in it, as they slowly attack glass.
What to Specify When Ordering
- Stopcock type — this PTFE-stopcock model or the all-PTFE version.
- Graduation interval and tolerance class — state the interval and whether you need Class A (supplied with a calibration certificate) or Class B; Class A suits analytical work and tenders that call for it, Class B is common for routine teaching titrations.
- Quantity and spare keys — the minimum order is 10 burettes; many schools plan one per student pair plus spares for breakages, and the keys are interchangeable.
- Stand, clamp and brush — add them to the same enquiry so each bench is complete on delivery.
Frequently Asked Questions
What is the graduation interval and maximum permitted error of this burette?
Both are set by your order. JLab supplies the burette with the graduation interval and tolerance class you specify, such as Class A or Class B, and the maximum permitted error is the limit that applies to the chosen class at the 50 ml nominal capacity. State the interval and class in your enquiry.
Is a calibration certificate supplied with this burette?
Yes, when you order Class A. Class A burettes are supplied with a calibration certificate, which is useful for analytical laboratories and tenders that ask for documented volumetric accuracy. Specify Class A in your enquiry if you need the certificate.
How does this burette differ from the all-PTFE stopcock version?
Both are 50 ml borosilicate glass burettes. This model has a PTFE stopcock with interchangeable replacement keys and blue enamel graduations; the other is listed with an all-PTFE stopcock. The listings give no further differences, so ask JLab if your choice depends on another feature.
Which replacement key fits this burette?
Quote product code EL-B-1593 when ordering spare keys; the specification states that the keys are fully interchangeable and that replacements are available. JLab also lists a spare PTFE-key burette stopcock separately — confirm the fit with JLab before ordering it for this model.
Are the burette stand and clamp included?
They are not part of this listing, which covers the burette. The burette stand, burette clamp and cleaning brush are separate items, linked below, and can be added to the same enquiry.
What information is needed for an export quotation?
Send the quantity, the destination country and port or city, your preferred delivery terms (for example FOB or CIF), any packing or labelling requirements, and the tender reference if the order is for a tender.
Why choose a PTFE stopcock on a glass burette?
A PTFE stopcock resists most laboratory acids, alkalis and solvents and turns without grease, so it is less likely to stick or contaminate the titrant than a greased glass key, and students can control it drop by drop.
Who manufactures this burette?
Jain Laboratory Instruments Pvt Ltd, trading as JLab, makes it at its works in Ambala, Haryana, India, and quotes for it directly as the manufacturer.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a laboratory glassware and equipment manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. This burette is made at JLab’s own works rather than bought in from a trader, so schools, colleges, dealers and importers buy it factory-direct, each burette is visually inspected before dispatch, and repeat orders and spare keys are handled by the manufacturer. JLab exports worldwide and ships to buyers 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. Tender information is on the JLab lab tenders page.
Titration Accessories
- Burette Stopcocks, PTFE Key, Straight Through — a spare borosilicate stopcock with PTFE key for repairing burettes.
- Burette Stand — a weighted polypropylene-base stand that holds the burette vertically.
- Mild Steel Burette Clamp — a powder-coated clamp with boss head for a retort stand.
- Nylon Burette Cleaning Brush — for cleaning the inside of the burette tube.
See all models in the Burettes range or the full Lab Glassware range.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button on this page, or send the quantity (minimum 10 units), the graduation interval and class you need, any spare keys or accessories, and your delivery location through the contact page.
Last updated: 3 October 2026
