Assay - iodine for industrial applications :> 99.5% - iodine for pharmaceutical applications :> 99.8% and meeting usp31 stipulations - iodine for laboratory applications :> 99.9% with special properties Particle size Medical type: 0-6mm Industrial type: 0-10mm Laboratory type: 0.5-2mm Packing Iodine is supplied in 25kg plastic drums for industrial & medical applications and 0.5 & 1 kg glass bottles for laboratory applications