Trace Metals in Drinking Water Standard - 29 components; Al 120ug/l ; Sb 10ug/l ; As 80ug/l ; Ba 50ug/l ; Be 20ug/l ; Bi 10ug/l ; Cd 10ug/l ; Ca 35000ug/l ; Cr 20ug/l ; Co 25ug/l ; Cu 20ug/l ; Fe 100ug/l ; Pb 40ug/l ; Li 20ug/l ; Mg 9000ug/l ; Mn 40ug/l ; Mo 100ug/l ; Ni 60ug/l ; K 2500ug/l ; Rb 10ug/l ; Se 10ug/l ; Ag 2ug/l ; Na 6000ug/l ; Sr 250ug/l ; Te 3ug/l ; Tl 10ug/l ; U 10ug/l ; V 30ug/l ; Zn 70ug/l in HNO3 2% ; HF 0.1% - Certificati ISO 17034 / ISO 17025 - Validita 8 mesi