Your Safer Source for Science
All-In-One Science Solution
Your Safer Source for Science
Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Email [email protected]

Lactose Intolerance—Demonstration Kit

By: The Flinn Staff

Item #: FB1570 

Price: $79.34

This item is temporarily out of stock. The expected available to ship date is 07/19/2024

Lactose Intolerance Demonstration Kit for biochemistry shows an over-the-counter enzyme Lactaid™ (lactase) in action. Enough materials for seven demonstrations.

See more product details

Product Details

Intestinal gas—not a very pleasant thought! Gas can be a big problem for those who lack the enzymes to digest certain foods. Do products that advertise to eliminate this problem really work? This demonstration kit shows an over-the-counter enzyme Lactaid™ (lactase) in action! Flasks containing various sugar combinations with and without Lactaid™ are compared for gas production by yeast cells. Balloons inflate very quickly when digestible sugars are available to the lactose intolerant yeast cells. Inflated and non-inflated balloons dramatically illustrate the concept and consequences for students.

Concepts: Enzymes, disaccharaides, monosaccharides.
Time Required: One class period


Materials Included in Kit: 
Dextrose, 50 g
Galactose, 50 g
Lactaid™ tablets, pkg/4
Lactose, 100 g
Yeast package, 15
Balloons, red, 28

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Analyzing and interpreting data

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
HS-PS1.A: Structure and Properties of Matter

Crosscutting Concepts


Performance Expectations

MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.