Volumetric Flask With PE Stopper Class-A
Product Code : EL-VF-10277
Quick answer: This is a Class-A tolerance clear borosilicate volumetric flask with a polyethylene (PE) stopper, supplied across 13 capacity/neck-size combinations from 5ml to 2000ml.
| Capacity (ml) | Neck Size (N/S) | Tolerance (±ml) |
|---|---|---|
| 5 | 10/19 | 0.020 |
| 10 | 10/19 | 0.020 |
| 20 | 10/19 | 0.030 |
| 25 | 10/19 | 0.030 |
| 50 | 12/21 | 0.050 |
| 50 | 14/23 | 0.050 |
| 100 | 12/21 | 0.080 |
| 100 | 14/23 | 0.080 |
| 200 | 14/23 | 0.100 |
| 250 | 14/23 | 0.120 |
| 500 | 19/26 | 0.150 |
| 1000 | 24/29 | 0.300 |
| 2000 | 29/32 | 0.500 |
Class-A Tolerance With a PE Stopper
This flask pairs Class-A certified tolerance — the tighter of the two standard tolerance classes — with a polyethylene stopper rather than glass, giving a lighter closure that will not chip like a ground-glass stopper. The neck size (N/S) column determines which stopper and accessories fit each capacity, and the 50ml and 100ml sizes are each available in two neck-size variants.
Frequently Asked Questions
What tolerance class is this flask?
It is a Class-A tolerance volumetric flask, the tighter of the two standard tolerance classes.
What stopper does this flask use?
It uses a polyethylene (PE) stopper.
Why are two neck sizes listed for some capacities?
The 50ml and 100ml capacities are each offered in two neck-size variants; confirm which N/S size matches your existing stoppers or accessories.
Related Products
Explore more from the Volumetric Flasks range, including Volumetric Flasks Clear Glass with PE Stopper Class-B and Amber Volumetric Flask, With PE Stopper Class-A.
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Last updated: September 2026.