Hydrogen ceramic ball Parameters Appearance Grey color spherical ball Size 1mm~12mm Magnesium Percentage 60% Hydrogen Max 1200ppb ORP Max -600mv PH Max 10 Density g/cm3 1.35~1.4 Hardness Medium Specification g/cm3 1.3~1.55 Bulk Density g/m3 0.74~0.78 Packing 20kgs per carton,500kgs per pallet