Perchloric acid(PA) AR ,GR , HighPurity, Tech We are the manufacturer and exporter Purity: 39% 50-52%,60-62%,70-72% Quality guarantee :ISO9001-2000AR( 70-72%),GR(70-72% , HighPurity(69-71%), Tech(70-72%)Quality index:Index itemExtra pureAualytically purePerchloric acid content %70.0-72.070.0-72.0Colourity nigro unit,No. ≤1015Insoluble matter in ethanol %≤0.0010.002Residue after ignition( %≤0.0030 ...