Electrolyte Challenge

Electrolyte Challenge
  • Buy 5 for $28.95 each and save 4%
  • Buy 15 for $26.95 each and save 11%

Availability: In stock

Build an electrolyte sensor and experiment to see if sports drinks really do provide more electrolytes than other beverages. You can even use what you learn to invent your own hydrating beverage!

Ideal for grades 6+

"The experiment content and directions were perfect! It was great that a kit was available for purchase versus me going out to find the supplies. My son's project came in 4th place out of 150 science fair projects!"

-Parent, Waldorf, MD



It's easy to find sports drinks on the sidelines of sporting events. One of the featured benefits of these drinks is electrolytes, which your body loses as you sweat. Do sports drinks really provide more electrolytes than other drinks such as orange juice? Use this chemistry science kit to find out!

With this kit, you will learn about electrolytes and how you can measure their concentration in a solution. We've included all the materials to build your own homemade electrolyte sensor. Does Gatorade have more electrolytes than orange juice? How many electrolytes are in coconut water, the latest sports drink fad? Answer these questions, then experiment with different recipes to create your own sports drink!

The kit follows the procedures in the Science Buddies chemistry project Electrolyte Challenge.

Each kit contains:

1   Digital multimeter
1 Copper wire, bare, 24-gauge (5 feet) 
1 9-V battery
1 9-V battery clip
3 Alligator clip leads (colors may vary)
1 1K Ohm resistor


Instructions for this kit are available online, see Additional Information for links to the instructions and more.

You will also need from home:

- Orange juice 
- Coconut water or other beverage with electrolytes 
- Tap water 
- Distilled water (available at grocery stores)
- Disposable plastic straw
- Scissors
- Small plastic, glass, or ceramic bowls (8)
- Masking tape or labels
- Permanent pen or marker
- Paper towels
Additional Information



Instructions are available online:  Electrolyte Challenge Instructions

For troubleshooting tips, please read our  FAQ's.

Area of Science Chemistry
Grade Level Grades 6-8, Grades 9+
NGSS Alignment MS-PS1-2, MS-LS1-7

Customer Reviews 4 item(s)

Excellent product!
This was a perfect first science project experiment. We loved that there were choices based on how much time you had until the project was due. So helpful. The project had clear instructions and came with the most important parts. We only had to buy a few, easily attainable parts. That was also very helpful for us as novice scientists. The package arrived before expected and worked great. We definitely recommend Science Buddies as a company and will certainly use next year!
Review by Kristen / (Posted on 3/15/2017)
Your kit increased our likelihood for success.
Who wants to gather 1,000 parts for an uncertain result? I was so glad to know it was all in one box.
Review by Beth / (Posted on 1/16/2017)
Great work!
Been using sciencebuddies to find project ideas for years, first time purchasing a kit. Will CERTAINLY purchase a kit for future projects! Great work!
Review by NiCole / (Posted on 12/9/2016)
Excellent Project
This project was both interesting and fun! I would highly recommend. My 10 year old twin boys completed this project this year (2015) and was one of 6 winners chosen out of 400+ projects submitted!! We are off to the county district fair! Thank you Science Buddies!!
Review by D.Strickland / (Posted on 8/18/2016)