Hydration Biosensor
Optimize hydration and performance with personalized, real-time hydration tracking.
Athletes know they need to hydrate and replenish their electrolytes but most don’t know how much. The Nix Biosensor is a non-invasive hydration monitor. It provides real-time hydration data that tells you when, what and how much to drink so you can avoid performance impairments caused by mild dehydration.
Our revolutionary hydration biosensor, paired with the Nix Solo app, quantifies fluid and electrolyte losses moment-by-moment and sends notifications to your phone, watch, or bike computer. So you can focus on what really matters - your workout. Used by Ironman athletes, Olympians, NBA, NHL, NFL, MLB and PGA athletes. Available for iOS and Android.
Highlights
- Evaluates biomarkers in your sweat, like a portable hydration lab - no needles.
- Quantifies when, what, and how much to drink in real time during your workout.
- Analyzes your sweat moment to moment, not a generic calculation.
- Dial in your hydration strategy and avoid cramping - especially for race day.
- Integrates with Apple watch, Garmin watch, Garmin Edge, and TrainingPeaks.
Product Specs
- Rechargeable pod with 36-hour battery life
- Single-use sweat patches for each workout session
- Compatible with iOS and Android
What's Included
- 1x Hydration Biosensor (rechargeable sensor)
- 4x Sweat Patches
- 1x Charger Case
- 1x USB Cord
Shipping
Free shipping for orders over $35. Ships via USPS and arrives in 3-10 business days.
Returns
Returns for any unopened and unused items within 30 days
FAQs
What is the accuracy level?
Validation data provided 83% accuracy in the Hydration Biosensor. The full report is available on the website.
How do I use the data I get?
Your hydration biosensor will provide you with your personal sweat stats - fluid and electrolyte losses. We will also provide you with your sweat composition and a list of electrolyte beverages that are best suited for you, and your replenishment.
How long does the battery last?
The rechargeable pod has a battery life of up to 36 hours.
Is it compatible with smartwatches?
Yes, it integrates with both smartphones and smartwatches.
Meet the Maker
Our Story
Suffered from Hyponatremia During Boston Marathon. Pursuit to Unlock Personal Health Data
Nix is redefining how we manage health by developing biosensors that empower consumers to access, understand, and act on their personal biology outside a traditional healthcare setting. Nix’s hydration biosensor provides athletes, soldiers, and laborers with hydration data in real-time, empowering them to optimize safety and performance. Led by Founder and CEO Meridith Cass, a graduate of Harvard Business School, former VC, collegiate athlete, and 9-time marathoner. Cass developed the Hydration Biosensor after suffering from hyponatremia (aka “over hydration”) during the Boston Marathon. In her research pursuits, and a desire to unlock more of her own personal health and wellness data, she discovered the void of options and solutions available for hydration monitoring.