xUmp.com Logo

COVID-19 NOTE (4/1/20): We are fully stocked, open & shipping all orders daily. Order with confidence. Stay healthy & safe!
Save up to 50% OFF cool science kits, toys and games.
Save up to 50% OFF cool science kits, toys and games.
Cristalheat - Supercooled Heat Pack - Image One


Share this product:

Cristalheat - Supercooled Heat Pack

by xUmp.com   Item#: 13494   4.5 star rating 3 customer reviews
List Price:$12.99
Sale Price: $5.99 /each
You Save: $7.00 (53%)
IN STOCK Ships today!
Order by 1pm PST/4pm EST.
Add to cart to see shipping prices.

Only 10 left in stock - order soon!
QTY:
 

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.


POPULAR PRODUCTS

Nitrile Gloves for Kids - Powder Free X-Small.

$19.99 $11.95

Nitrile Gloves for Kids - Powder Free X-Small

Extra-small nitrile exam gloves designed and manufactured for superior protection against viral, bacterial, and certain chemical hazards.

Anti-fog Project Safety Glasses.

$5.99 $3.95

Anti-fog Project Safety Glasses

Durable, anti-fog safety glasses that fit comfortably on any head size.

Challenger Safety Goggles - Clear Anti Fog.

$9.99 $7.95

Challenger Safety Goggles - Clear Anti Fog

These goggles meet the ANSI Z87.1, 2010 High Impact standards.

Kids Chemical Safety Goggles.

$12.99 $9.95

Kids Chemical Safety Goggles

Recommended for protection against chemical splashes. A must have for every young chemist!

Disposable Foam Safety Ear Plugs - ANSI S3. 19-1974.

$0.79 $0.29

Disposable Foam Safety Ear Plugs - ANSI S3. 19-1974

These ear plugs are made of self adjusting foam that provides a comfortable, low pressure fit and excellent sound filtration.

Laboratory Protection Apron.

$12.99 $8.75

Laboratory Protection Apron

Highly durable lab apron made of rubberized cloth is impermeable and easy to clean, perfect for all manner of lab or classroom experiments

FEATURED PRODUCTS

Illuminated Orbiter - Sun-Moon-Earth .

$329.99 $299

Illuminated Orbiter - Sun-Moon-Earth

This illuminated orbiter is great for demonstrations in the astronomy classroom!

Physics Workshop Kit.

$69.99 $49

Physics Workshop Kit

This science kit is an essential introduction to physics knowledge!

Candy Chemistry Kit .

$49.99 $25

Candy Chemistry Kit

Learn Chemistry While Creating Sweet Treats

Celestron 5MP LCD Digital Microscope II.

$299.99 $249

Celestron 5MP LCD Digital Microscope II

The LCD Digital Microscope II is a professional biological microscope at an affordable price. Up to 1600X with digital zoom!

Tarantula Specimen.

$39.99 $24.99

Tarantula Specimen

Great tarantula specimen for the science classroom!

Pin Art - Large - 7 inches.

$29.95 $18.50

Pin Art - Large - 7 inches

Make the coolest 3D pin art on your desk with this amazing desk toy.

Science-Sidebar: Science Education Articles

xUmp.com Logo


Join our tribe:

SIGN-UP & SAVE

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



xUmp.com Catalog

CATALOG

View xUmp science supplies catalog

At xUmp.com, we are passionate about science. We believe in hands-on learning and making science fun. - Anton Skorucak, Physicist and Founder

At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.