Iron Sulfite Agar (ISA) ISO 15213-1 Back to Catalog Alphachem Iron Sulfite Agar (ISA) ISO 15213-1 Product Details APPLICATIONS SPECIFICATIONS CODE DOCUMENTS The Iron Sulfite Agar (ISA) (ISO 15213-1) is recommended for the enumeration of sulfite-reducing Clostridium spp. Next Product SIM Agar Previous Product Wilkins-Chalgren Agar