Solutie standard de cupru Cu(NO3)2 in HNO3 0.5 mol/l, trasabila NIST; 1000 mg/l Cu Certipur®, Merck, cod 1197860100
Solutie standard de aluminiu, Al(NO3)3 in HNO3 0.5 mol/l, trasabila NIST; 1000 mg/l Al Certipur®, Merck, cod 1197700100
Solutie standard de fier Fe(NO3)3 in HNO3 0.5 mol/l, trasabila NIST, 1000 mg/l Fe Certipur® - cod 1197810100 Merck
Solutie standard de mangan Mn(NO3)2 in HNO3 0.5 mol/l, trasabila NIST; 100...
Solutie standard de cupru Cu(NO3)2 in HNO3 0.5 mol/l, trasabila NIST; 1000 mg/l Cu Certipur®, Merck, cod 1197860100
Solutie standard de aluminiu, Al(NO3)3 in HNO3 0.5 mol/l, trasabila NIST; 1000 mg/l Al Certipur®, Merck, cod 1197700100
Solutie standard de fier Fe(NO3)3 in HNO3 0.5 mol/l, trasabila NIST, 1000 mg/l Fe Certipur® - cod 1197810100 Merck
Solutie standard de mangan Mn(NO3)2 in HNO3 0.5 mol/l, trasabila NIST; 1000 mg/l Mn Certipur® - cod 1197890100 Merck
Rezorcinol GR for analysis-cod 1075930100 Merck