sodium bromide, powder,99%,100000mt per year iso, ... .5%,99%,99.5% 4.Grades: Industrial Grade, Medical Grade,Photo Grade1. Sodium Bromide2.Appearance: White Powder3.Content: 99%,99. ... 5%4.Grades: Industrial Grade, Medical Grade,Photo Grade5.Use: ... max-Fe1ppm max4ppm max-Cu1ppm max oildrilling grade 99% 99.5% sodium bromide