New Scientist: Sweat monitor could reveal when you are exercising too hard Elastic bands embedded with colour-changing sensors can reveal how hard muscles are working by measuring the acidity of sweat on skin. The device could be used to improve worker safety in physically ... Forbes: Sweat: The Next Frontier In Wearable Health And Why The Timing Has Never Been Better Advances in microfluidic biosensors and materials science transformed sweat into a reliable, high-quality data stream capable of delivering meaningful health insights.

Understanding the Context

Sweat: The Next Frontier In Wearable Health And Why The Timing Has Never Been Better Sweat is a community-driven platform offering fitness programs, discussions, and support to help individuals achieve their health and wellness goals. Normally where people get burned is that their boards get put in a "condensing" environment even though everything is specified as "non-condensing". But that's not a design problem so much as a specifications issue. tl;dr Don't sweat it and just do your design.

Key Insights

Good luck. Hand sweat consists mostly of water and trace amounts of urea, minerals and lactic acid. I would say that lactic acid is a moderate acid with a pka of approx. 3.5, but we are talking trace amounts in sweat.