Inorganic Analytical Perchloric Acid and Salts Trace Metal Acids(PPB Grade) 2593 PERCHLORIC ACID PERCHLORIC ACID 70%, ENVIRONMENTAL GRADE HClO₄ 100.46 7601,90,3 7601903 90,3 760190,3 7601 90 3 5.1/8/I 3-0-1 1.660 Similar to redistilled grade with guaranteed trace metal specifications, Packed in fluorinated bottles to minimize boron and silicon contamination, 55781 123.60 500 ML 55782 364.30 6 X 500 ML 55783 294.70 2 L 55784 739.40 4 X 2 L 55785 1052.50 6 X 2 L Ag 10 ppb Al 10 ppb As 10 ppb B Ba 10 ppb Be 10 ppb Ca 10 ppb Cd 10 ppb Co 10 ppb Cr 10 ppb Cu 10 ppb Fe 10 ppb K 10 ppb Li 10 ppb Mg 10 ppb Mn 10 ppb Mo 10 ppb Na 10 ppb Ni 10 ppb Pb 10 ppb Sb 10 ppb Se 10 ppb Sr 10 ppb Ti 10 ppb Tl 10 ppb V 10 ppb Zn 10 ppb Assay 69.0-72.0% Residue after ignition 0.001% Silicate and phosphate 0.0005% Chloride 0.001% Nitrogen compounds 0.001% Sulfate 0.001% Heavy metals 0.00001% Color (APHA) 10