US

Corning - Pyrex 50mL Wide Mouth Voltric Flask, Class A, HEA vy Duty

  • 50 mL capacity, Class A tolerance
  • Wide mouth, heavy duty
  • No. 13 standard taper glass stopper supplied
  • Glass, round bottom
  • Sharp, permanent graduation line

Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A Class A wide mouth volumetric flask for microchemical work that needs easy filling and mixing. It comes with a ground glass stopper, and replacements are sold under a separate number.

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ASIN: B00JVU208ACategory: Volumetric Flasks

Overview

A chemist doing small scale microchemical work gets a Pyrex EZ Access flask calibrated to Class A tolerance. The wide neck makes filling and mixing easier, and a ground glass stopper seals the top.

Class A calibration and a permanent graduation line suit accurate solution prep. The listing gives no weight or dimensions, and the stopper is a separate part if it breaks.

Who it's for

Analytical and microchemistry benches that make standard solutions at small volume. Teaching labs that tolerate breakage may prefer plastic ware, and large batch work needs bigger flasks.

Pros and cons

Pros
  • Class A calibrated
  • Wide mouth for filling and mixing
  • Permanent graduation line
Cons
  • Dimensions not listed
  • Glass can break
  • Replacement stopper sold separately

Performance notes

The calibration line marks the exact volume when the liquid meniscus reaches it, and Class A tolerance limits the error. The wide mouth speeds filling and mixing, while the ground glass stopper seals against the neck for shaking.

Specifications

Capacity & performance
Capacity50 ml
Construction & materials
MaterialGlass
Other details
ToleranceClass A
Bottom ShapeRound
NeckWide mouth, heavy duty
StopperNo. 13 standard taper ground glass, interchangeable

Frequently asked questions

How does the stopper fit the Pyrex 50 mL wide mouth flask?

It is supplied with an interchangeable No. 13 standard taper Pyrex ground glass stopper. The listing gives no further fitting steps.

Where can I get a replacement stopper for this flask?

The listing says to see No. 7650 for replacement stoppers.

Is this Pyrex flask for large batches?

No. It is designed for microchemical work at 50 mL.