Volumetric Flask With Penny Head Stopper, Unserialized CLASS A
Product Code : EL-VF-10272
Quick answer: This is a Class-A tolerance borosilicate volumetric flask with a penny head glass stopper, manufactured to comply with the requirements for Type 1, Class A unserialized flasks, and supplied across an unusually wide range from 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 |
A Wider Capacity Range for Bulk Volumetric Work
Most volumetric flask ranges top out at 1000ml or 2000ml; this Type 1, Class A unserialized flask extends to 4000ml and 6000ml, both using a 38mm penny head stopper, for labs that need certified Class-A accuracy at bulk-preparation volumes rather than only bench-scale ones. "Type 1" refers to the borosilicate glass composition, the standard for chemically durable laboratory glassware. As with the smaller sizes, several mid-range capacities offer a choice of two stopper sizes — confirm which is needed against existing accessories.
Frequently Asked Questions
What does "Type 1, Class A" mean on this flask?
Type 1 refers to the borosilicate glass composition, and Class A refers to the tighter of the two standard volumetric tolerance classes.
What is the largest capacity available?
The range extends up to 6000ml, alongside a 4000ml size, both larger than the typical 1000-2000ml top end of most volumetric flask ranges.
What stopper does this flask use?
It uses a penny head glass stopper, sized to match each capacity.
Related Products
Explore more from the Volumetric Flasks range, including Amber Volumetric Flasks, Unserialized With Penny Head Stopper Class-A and Volumetric Flask With Polyethylene Stopper, Unserialized Class A.
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Last updated: September 2026.
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