PYREX 2L Narrow Mouth Erlenmeyer Flasks with Heavy Duty Rim
- 2 liters capacity, 200 ml graduations
- Borosilicate glass, round bottom
- Heavy duty rim, 1 flask per pack
- 1.2 pounds item weight
- Texas buyers need a laboratory permit
Last refreshed Oct 3, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A single two-liter narrow-mouth Erlenmeyer flask, a mixing vessel rather than a calibrated volumetric flask.
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ASIN: B004XR5W5ECategory: Erlenmeyer Flasks
Overview
A school or research lab bench holding bulk solutions is where this Pyrex two-liter flask fits. It has a heavy duty rim to reduce chipping and uniform wall thickness to balance strength with thermal shock resistance.
The reason to buy is the large capacity in borosilicate glass with an edge built to resist chips. The limitation is the narrow neck and approximate scale, and Texas shipments require a permit.
Who it's for
Teaching labs and research groups mixing large batches in a flask. Users wanting calibrated volumes should use volumetric glassware, and those who add solids often should consider a wide mouth shape.
Pros and cons
- Heavy duty rim
- Uniform wall thickness
- Not a volumetric flask
- Texas permit required
- Heavy when full
Performance notes
Even wall thickness spreads thermal stress, and the heavy rim reduces edge chipping from handling. Graduations are rough guides at wide steps, so volume accuracy is low.
Specifications
| Brand | Pyrex |
|---|---|
| Dimensions & fit | |
| Item weight | 1.2 pounds |
| Capacity & performance | |
| Capacity | 2 liters |
| Construction & materials | |
| Material | Borosilicate Glass |
| Other details | |
| Shape | Erlenmeyer |
| Bottom shape | Round |
| Graduations | 200 ml |
| Part number | FBA_4980-2LCNpk |
| Number of items | 1 |
Frequently asked questions
Is this a volumetric flask?
No. It is an Erlenmeyer flask with a rough scale. Volumetric flasks have a single etched mark and a stated tolerance.
Is the Pyrex 2 L flask wide mouth?
No. The title says narrow mouth.
Does Texas shipping need a permit?
Yes. A NAR-120 laboratory apparatus permit is required, verified by the seller by email after purchase.