Volumetric Flask With PTFE Stopper, Unserialized CLASS A
Product Code : EL-VF-10275
Lab Glassware Manufacturer manufactures and exports the Volumetric Flask With PTFE Stopper, Unserialized, Class A from its production facility in Ambala, Haryana, for Class-A volumetric measurement with demanding reagents in laboratories in India and to export buyers that have recently included Brazil, Argentina and Uruguay — part of a wider base of enquiries from across the Rio de la Plata region.
Quick answer: This is a Class-A tolerance borosilicate volumetric flask with a chemically resistant PTFE stopper, supplied across the same extended capacity range as the penny head and polyethylene stopper versions — 1ml up to 6000ml.
| Capacity (ml) | Tolerance (±ml) | Stopper Size (mm) |
|---|---|---|
| 1 | 0.01 | 8 |
| 2 | 0.01 | 8 |
| 5 | 0.02 | 9 |
| 5 | 0.08 | 13 |
| 10 | 0.02 | 9 |
| 10 | 0.08 | 13 |
| 20 | 0.03 | 9 |
| 20 | 0.08 | 13 |
| 25 | 0.03 | 9 |
| 25 | 0.08 | 13 |
| 50 | 0.05 | 9 |
| 50 | 0.08 | 13 |
| 100 | 0.08 | 13 |
| 100 | 0.10 | 16 |
| 200 | 0.10 | 16 |
| 200 | 0.20 | 19 |
| 250 | 0.12 | 16 |
| 250 | 0.20 | 19 |
| 500 | 0.20 | 19 |
| 1000 | 0.30 | 22 |
| 2000 | 0.50 | 27 |
| 4000 | 1.20 | 38 |
| 6000 | 1.50 | 38 |
Why PTFE Is the Preferred Stopper for Aggressive Reagents
Of the three stopper options offered across this capacity range — penny head glass, polyethylene and PTFE — PTFE resists the widest range of laboratory solvents and aggressive chemicals without swelling, softening or reacting, making it the preferred choice where the reagent itself would attack a plastic stopper or where a glass-to-glass ground joint is undesirable. It shares the identical capacity, tolerance and stopper-size structure with its penny head and polyethylene siblings, so switching stopper type does not change the flask's certified accuracy.
Frequently Asked Questions
Why choose PTFE over polyethylene or glass stoppers?
PTFE resists a wider range of laboratory solvents and aggressive chemicals without swelling or reacting, making it suited to demanding reagents.
Does the stopper type affect the flask's accuracy?
No, this flask shares the identical capacity and tolerance structure with the penny head and polyethylene stopper versions.
What is the largest capacity available?
The range extends up to 6000ml, alongside a 4000ml size.
Do you export this flask outside India?
Yes, this flask is exported to institutional and distributor buyers outside India, with recent enquiries from Brazil, Argentina and Uruguay among other South American markets.
Related Products
Explore more from the Volumetric Flasks range, including Volumetric Flask With Polyethylene Stopper, Unserialized Class A and Amber Volumetric Flask, Unserialized, With PTFE Stopper Class A.
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Last updated: September 2026.