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Becker Bottle “One in a Million”

By: Bob Becker, Kirkwood H.S., Kirkwood, MO

Item #: AP4559

Price: $48.90

Becker Bottles “One in a Million” Demonstration Models for chemistry displays molecular concentration and parts per million contamination concepts in a visual manner. Students easily comprehend the concept of solution concentration from this simple demonstration.

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Other Options

Item# AP4559 AP4854 AP4863
Type One in a Million One in a Million Too Set of Two
Price $48.90 $48.90 $90.35
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Product Details

How big is a million? What does it mean for a contaminant to be found in a concentration of one part per million? These amazing bottles make molecular concentration and ppm contamination concepts more concrete for your students and offer many wonderful teaching opportunities.

The Becker Bottle “One in a Million Too” (AP4854) is a must purchase to go with your original Becker Bottle (AP4559). If you do not have the original Becker Bottle, order the set of two (AP4863) and save!

Concepts: Solution concentration, parts per million.
Time Required: 20 minutes
Materials Provided: Becker bottles and instructions.


Becker Bottle “One in a Million”—This large 3-L bottle contains one million tiny colored spheres. When you challenge students to find the one black sphere (1 ppm) among all the other colored spheres in the bottle, the concept of a million starts to become real. Other colored spheres (e.g., 10 ppm, 100 ppm) are significantly easier to find in the bottle.