14 components: Na 10000mg/l Ca 10000mg/l Mg 5000mg/l K 2500mg/l Fe 100mg/l Al 100mg/l Pb 25mg/l Mn 25mg/l Cr 25mg/l Cu 25mg/l Ni 5mg/l Cd 2.5mg/l Sb 5mg/l Zn 100mg/l in HNO3 2% ,, CRM, ISO 17034 and ISO 17025 Conservation 12 1 * 250 mL