14 components: As 1mg/l Cd 1mg/l Cr 1mg/l Cu 1mg/l Ni 1mg/l Pb 1mg/l Tl 1mg/l Al 4mg/l Zn 4mg/l Fe 25mg/l Mg 25mg/l Ca 100mg/l Na 100mg/l P 2.5mg/l in HNO3 10% Lot de 4 bottles ,,CRM, ISO 17034 and ISO 17025,, ,,Conservation 1 * 4 Bottle