Flask, ERLENMEYER Narrow Mouth ~ PYREX Glass 2L
- 2000 ml capacity, 200 ml graduations
- Borosilicate glass, round bottom
- 0.69 kg item weight
- 10.55 x 6.3 x 10.55 inches overall
- Heavy duty rim and uniform wall thickness
Last refreshed Oct 3, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A narrow-mouth two-liter Erlenmeyer flask in borosilicate glass with a sturdy rim. Its graduations are approximate, so it is not meant for accurate volume measurement.
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ASIN: B001BLKL4WModel: 4980-2LCategory: Erlenmeyer Flasks
Overview
A teaching lab bench is where this Pyrex narrow mouth flask fits, with a conical body and a heavy duty rim to reduce chipping. Approximate graduations are printed in durable white enamel, with an extra large marking space.
The reason to buy is the uniform wall thickness, which the description says balances mechanical strength with thermal shock resistance. The limitation is that the graduation scale is approximate and the neck is narrow, which rules out easy wide-mouth titration work.
Who it's for
School and research labs preparing and storing large solutions in a flask that can see temperature changes. Titration users who want a wide opening should choose a wide mouth flask, and exact volumes need volumetric ware.
Pros and cons
- Borosilicate glass body
- Uniform wall thickness
- Heavy duty rim resists chipping
- Large marking space
- Graduations approximate only
- Heat limits not stated
- Heavy when full
Performance notes
A uniform wall thickness spreads heat evenly, which helps the glass resist thermal shock, and the heavy rim guards the edge during handling. The enamel scale gives rough volume only, so accuracy depends on other measuring tools.
Specifications
| Brand | Pyrex |
|---|---|
| Model | 4980-2L |
| Dimensions & fit | |
| Dimensions D x W x H | 10.55 inches deep x 6.3 inches wide x 10.55 inches tall |
| Item weight | 0.69 kg |
| Height | 268mm |
| Outside Diameter | 160mm |
| Capacity & performance | |
| Capacity | 2000 ml |
| Construction & materials | |
| Material | Borosilicate Glass |
| Other details | |
| Shape | Erlenmeyer |
| Bottom shape | Round |
| Graduations | 200 ml |
| Part number | 4980-2L |
| Graduations | 200ml, 600ml to 1800ml |
Frequently asked questions
Is the Pyrex 4980-2L a wide mouth flask?
No. The title says narrow mouth. The wide mouth Erlenmeyer flasks are a different Pyrex model.
How accurate are the markings on this flask?
They are described as approximate graduations in white enamel at 200 ml intervals, so they are for rough reading only.
Can the Pyrex 4980-2L go on a heat source?
The description cites thermal shock resistance but gives no temperature rating, so check Corning's data before heating.