xUmp.com Logo

Science Fair Supplies Sale
Science Fair Supplies Sale

Cristalheat - Supercooled Heat Pack (Image One) @ xUmp.com

Cristalheat - Supercooled Heat Pack

Item#: 13494   4.5 star rating 3 customer reviews
List Price:$12.99
Deal Price: $5.95 /each
You Save: $7.04 (54%)
IN STOCK Ships today!
Order by 1pm PST/4pm EST.
Add to cart to see shipping prices.

Only 14 left in stock - order soon!
QTY:

Save additional 10% OFF with coupon code: SCIFAIR

According to Wikipedia, supercooling is a process of lowering the temperature of a liquid or gas below its freezing point, without it becoming a solid. However, a liquid below its standard freezing point will crystallize in the presence of a seed crystal around which a crystal structure can form. This scientific principle actually has real-world applications--for example, this has been used in freezers that cool drinks to a supercooled level so that when they are opened they turn to slush. This principle is also found in this supercooled heat pack. The heat pack consists of sodium acetate in a supercooled state in a sealed plastic pouch. There is a disk in the pouch that is clicked to stimulate the liquid to turn into a solid. The freezing temperature of the liquid is higher than room temperature, so when the liquid turns into a solid, it releases enough energy to raise its temperature towards its freezing point, which heats the heat pack very quickly, right in front of you! To supercool the liquid again, it must first be heated to the melting temperature again and allowed to cool. This is an excellent demonstration to use in science classrooms!

Features:

  • Utilizes supercooling to produce heat
  • Great for muscle aches
  • Also excellent for scientific demonstration





Age:
13 +
Box Size:
5.00 x 4.00 x 0.50 inches
12.70cm x 10.16cm x 1.27cm
Weight:
0 lb 6 oz
0.17 kg

Customer Reviews


4 star rating  Reusable Heat Pack
Stephan from USA, Colorado, Lafayette
We bought 4 to beat our ski boots before starting for the day. My son kept having to show off the crystallization heaters to friends and family. One in each boot works great to start off with toasty toes and it feels like a better and quicker fit.

4 star rating  Good
T. Mcdonald from United states, NY, Queens
Heat packs work really well. Cant give 5 stars until I have seen the longevity of the packs though.

5 star rating  
A. Long from Lafayette, IN, USA
works well. easy to reset.


FEATURED PRODUCTS

Snap Circuits Extreme 750-in-1 with PC interface.

$119

Snap Circuits Extreme 750-in-1 with PC interface

Do micro-controller projects and program them using your own computer!

Hoberman Sphere - Universe Glow.

$39

Hoberman Sphere - Universe Glow

Every kid needs one of these spheres!

Tin Can Robot 4M Kit.

$19.99

Tin Can Robot 4M Kit

You don’t think recycling is cool? Get a look at this, we’re sure you’ll change your mind!

4M Kitchen Science Kit.

$14.95

4M Kitchen Science Kit

Perform awesome experiments using everyday materials found in any kitchen!

Plant & Animal Cell Model Activity Set.

$159

Plant & Animal Cell Model Activity Set

This plant and animal cell model activity set is a must-have resource for the science classroom!

3D Mirascope.

$7.95

3D Mirascope

This mirascope creates a 3D hologram image!

xUmp.com Logo


Join our tribe: Become our Friend on Facebook Follow us on Instagram Follow us on Pinterest Follow us on Twitter Check out our videos on YouTube

SIGN-UP & SAVE

Sign-up for our weekly discounts and promotions email newsletter.

xUmp.com Mission