The IonPac^® AS7 is a high-capacity, high-efficiency, hydrophobic, anion-exchange column designed for the separation of a wide range of polyvalent anions, including polyphosphates, polyphosphonates, and other polyvalent complexing agents such as EDTA and NTA.

The IonPac AS5 is a low-capacity, hydroxide-selective, anion-exchange column designed for the separation of higher valence anions, including polyphosphates, oxyanions, EDTA complexes, metal cyanide complexes, and hydrophobic anions such as iodide, thiosulfate, and thiocyanate.