Close
Frey Scientific Reusable Heat Pack, 8 x 8 Inches
Item #: 1392321
Show students an example of a chemical reaction that they can hold in their hand and feel with this reusable heat pack!
$20.89
$15.67
Free Shipping Eligible: Details
School Specialty Shipping Policy
Items Shipped Within the Contiguous 48 United States
Free Shipping Eligible Items
- Free shipping and handling on eligible supply orders of $49 or more. Free shipping calculation is based on the subtotals of eligible items, after any additional discounts are applied.
- For subtotals less than $49, the shipping and handling charge is $9.95.
Free Shipping Ineligible Items
- Shipping and handling charges are 15% of the subtotal of the items, after any discounts are applied, with a $9.95 minimum charge.
Free Shipping Ineligible Items
- Shipping and handling charges are 15% of the subtotal of the items, after any discounts are applied, with a $99 minimum charge. If the subtotal is greater than $1,000, please e-mail freight_quote@schoolspecialty.com for a freight quote.
*Note: Individually negotiated shipping policies will override the standard shipping policy. See Full Details
Items Shipped to Hawaii, Alaska and International
See our Hawaii & Alaska Shipping Policy and International Shipping Policy for details.In Stock - Typically Ships Within 2-3 Days
Description
Specifications
Customer Reviews
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.
- 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