Perchloric acid(PA) AR ,GR , HighPurity, Tech We are the manufacturer and exporter Purity: 39% 50-52%,60-62%,70-72% Quality guarantee ... -71%), Tech(70-72%)Quality index:Index itemExtra pureAualytically purePerchloric acid content %70.0-72.070.0-72.0Colourity nigro unit ...