Milligram per liter (mg/L) is a clearer unit than parts per million (ppm) for hydrogen concentration in water.

“We like to use milligram per liter because ppm it is the same but but but ppm can be confusing because ppm in this case is reference to a weight per weight ratio but ppm often is has reference to a volume per volume right like 10,000 ppm right is like 1% or maybe it's going to be a ratio like talk about like dutarium depletion and we talk about dutarium and water that's ppm but that's a multim mole um ratio. Yeah. Uh percentage wise, not not a weight wise. Anyway, it could just be confusing, but yes, milligram per liter was the dose we were using.”