Corning Pyrex 5600-2L 2L Class A Lifetime Red Volumetric Flat Bottom Flask with
- 2000 mL capacity, +/- 0.5 mL tolerance
- Lifetime Red etched capacity mark
- Class A, ASTM E-694, E-542 and E-288
- No. 2000 polyethylene snap-cap, no stopper
- 1.3 pounds, 357 mm tall, 158 mm outer diameter
Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A two-liter Class A flask with an etched red-band capacity mark that needs no filler, sold with a polyethylene snap-cap. It is made for accurate volumes rather than for heating.
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ASIN: B004DGIGVMModel: 5600-2LCategory: Volumetric Flasks
Sizes Available
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Overview
Not a flask that relies on a filled-in marking, this Lifetime Red version has its capacity mark etched as a fine line through a narrow red band into clear glass. The result is legible and permanent, with a beaded rim and a long neck.
The reason to buy is the permanent etched mark with high legibility, on a flask made to Class A tolerances under the ASTM standards. The limitation is that it uses a snap-cap rather than a stopper, and the listing shows flat and round bottoms.
Who it's for
Labs that make up large standards daily and want a mark that cannot wear off. Casual mixing and heated work do not call for a Class A volumetric flask.
Pros and cons
- Etched permanent capacity mark
- Red band is easy to read
- Class A tolerance
- Strength added by machine-blown body
- Snap-cap, not stopper
- Large and tall
- Bottom shape fields conflict
- Not for heating
Performance notes
The etched line lets the meniscus be set precisely without a filler that could wear, and the narrow red band improves reading. Strength comes from the machine-blown body sealed to a heavy-tubing neck.
Specifications
| Model | 5600-2L |
|---|---|
| Dimensions & fit | |
| Dimensions D x W x H | 6.22 inches deep x 6.22 inches wide x 14.06 inches tall |
| Item weight | 1.3 pounds |
| Capacity & performance | |
| Capacity | 2000 ml |
| Construction & materials | |
| Material | Borosilicate Glass |
| Other details | |
| Tolerance | +/- 0.5 mL |
| Accuracy class | Class A |
| Shape | Flat Bottom |
| Cap | No. 2000 polyethylene snap-cap |
| Specification met | Astm |
| Part number | 5600-2L |
Frequently asked questions
What is in the box with the Pyrex 5600-2L flask?
The title says the flask comes with a polyethylene snap-cap. The listing shows one item and no stopper.
What does Lifetime Red mean?
The description says the capacity mark is etched as a fine line through a narrow red band into clear glass, making a filler unnecessary.
How accurate is the 5600-2L?
It is Class A with a tolerance of +/- 0.5 mL at 2000 mL.