H2 Blue Hydrogen Test KitFollowing the release of our first hydrogen product we bring to you H2 Blue. Now you can test your water for its hydrogen concentration to ensure your product is working correctly and to monitor its performance. H2 Blue Use H2 Blue to detect dissolved H2 (molecular hydrogen) in your water. H2 Blue uses Methylene blue (a biological tissue dye used as an indicator in medicine). H2 Blue reacts with hydrogen rich water and turns clear when the h2