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Pyrex

PYREX 100 mL Class A Volumetric Flask with Polyethylene Snap-Cap 5580-100

  • 100 mL Class A volumetric flask
  • Polyethylene snap-cap included, No. 100
  • Flat bottom, heavy beaded neck
  • Single flask

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

Our verdict

A Class A volumetric flask with a sharp permanent graduation line and a snap-cap closure, suited to preparing exact solution volumes. The listing gives no tolerance figure or weight.

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ASIN: B0F5RW8N8BModel: 5580-100Category: Volumetric Flasks

Sizes Available

50 ML100 ML500 mL500 ML

Styles Available

PACK OF 6

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Overview

Not a general mixing flask or beaker, this is a Class A volumetric flask made for a single exact volume. The body is machine blown with a heavy beaded neck, and the neck is tooled to take a polyethylene snap-cap.

Class A ware is the standard to ask for when solutions must be made up to an exact line, and white block lettering makes the inscription easy to read. The listing leaves out the tolerance value and glass type.

Who it's for

Analytical and teaching labs preparing standards and dilutions to a marked line. Anyone doing general mixing or heating work should use a beaker or conical flask instead.

Pros and cons

Pros
  • Class A grade
  • Sharp permanent graduation line
  • Easy to read inscription
Cons
  • Tolerance value unstated
  • Glass type unstated

Performance notes

The single graduation line on the neck marks the exact volume, and the solution is brought up to it with the meniscus read at eye level. The snap-cap closes the neck for mixing by inversion and for short storage.

Specifications

BrandPyrex
Model5580-100
Capacity & performance
Capacity100 ml
Other details
ShapeCylinder body, volumetric
Bottom ShapeFlat
Pack quantity1 flask
ClosurePolyethylene snap-cap, No. 100
GraduationSharp, permanent line
Specification metClass A

Frequently asked questions

Does the Pyrex 5580-100 include a snap-cap?

Yes. The title says with polyethylene snap-cap, and the neck is tooled for a No. 100 cap.

Is the 5580-100 a beaker?

No. It is a Class A volumetric flask.

How many flasks come in the pack?

One, per the title and specs.

What accuracy does Class A give?

The listing states Class A but gives no tolerance figure.