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Frey Scientific Reusable Heat Pack, 8 x 8 Inches
Item #:
1392321
$27.09
$20.32
package_2 Free Shipping Eligible.
Quickship Eligible.
In Stock - Typically Ships Within 2-3 Days
Show students an example of a chemical reaction that they can hold in their hand and feel with this reusable heat pack!
About This Item
Description
The hand warmer contains a super saturated solution of water and sodium acetate. Snapping the metal disc creates a chain reaction causing the solution to crystallize, giving off heat. The heat packs can be recharged back to the liquid state by boiling water for 10-15 minutes and allowed to slowly cool. 8 x 8 inches.Features
- Shows how sodium acetate uses the process of supercooling to create heat
- Great for everything from muscle aches to scientific demonstrations
- Combines practical applications with a process that's fun to watch
- Reusable and compact - perfect for classrooms
Includes:
- 1 Heat Pack
Shipping Type:
parcel
Free Shipping:
true
Specifications
Certifications:
Not Applicable
Maximum Age:
12 years
Allergens:
Contains No Allergens
No Choking Hazard