Amber Volumetric Flask, Unserialized, With PTFE Stopper CLASS A
Product Code : EL-VF-10259
Lab Glassware Manufacturer manufactures and exports the Amber Volumetric Flask, Unserialized, With PTFE Stopper, Class A from its production facility in Ambala, Haryana, for light-sensitive Class-A volumetric measurement in laboratories in India and to export buyers that have recently included Kiribati, Tuvalu and Nauru — part of a wider base of enquiries from across the Pacific Island states.
Quick answer: This is a Class-A tolerance amber borosilicate volumetric flask with a chemically resistant PTFE stopper, supplied across 13 capacities from 1ml to 2000ml, each carrying its own stated tolerance and stopper size.
| 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 |
Why This Flask Lists Two Tolerances at the Same Capacity
Several capacities in this range — 5ml through 250ml — are offered in two neck/stopper-size variants, and the tighter-tolerance option pairs with the smaller stopper size while the wider-tolerance option pairs with the larger one. Buyers who need the tightest achievable Class-A tolerance at a given capacity should specify the smaller stopper-size variant; buyers matching existing stoppers or accessories can choose the size already in use. The PTFE stopper itself resists a broad range of laboratory chemicals better than a polyethylene stopper, making this variant a common choice for aggressive reagents alongside its amber, light-protective glass.
Frequently Asked Questions
Why does this flask show two tolerance values for some capacities?
Several capacities are offered in two neck/stopper-size variants; the smaller stopper size pairs with the tighter tolerance.
What stopper material does this flask use?
It uses a PTFE stopper, which resists a broad range of laboratory chemicals.
What is the tightest tolerance available?
The 1ml and 2ml sizes carry the tightest tolerance at ±0.01ml.
Do you export this flask outside India?
Yes, this flask is exported to institutional and distributor buyers outside India, with recent enquiries from Kiribati, Tuvalu and Nauru among other Pacific Island markets.
Related Products
Explore more from the Volumetric Flasks range, including Amber Volumetric Flask, Unserialized, With Polyethylene Stopper Class A and Volumetric Flask With PTFE Stopper, Unserialized Class A.
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Last updated: September 2026.