High-Purity Standards offers a broad range of single and multi-component standards for Ion Chromatography/Ion Selective Electrode applications. These standards can be used with methods for common anions such as EPA Method 300, Standard Method 4110, ASTM D4327; methods for cations including EPA Method 300.7; methods for speciated metals such as EPA Method 218.7; and methods for metal cyanide complexes including EPA Method 9015 and for total cyanide as in ASTM D 2036-97 to list a few.