... /box Fast, Easy-to-Use, Accurate Manganese ion Test Kit1. SpecificationName: Manganese ion Test KitModel: LH-P19Type: semi- ... accordance with the instructions, users can complete the manganese test independently without specialized training. 10 minutes is ... many valence states of manganese compounds, mainly divalent, trivalent, tetravalent, hexavalent and heptavalent manganese. Manganese is one of the ...