Pre-Mixed GFAA Matrix Modifier 3: 10 mg/mL NH4H2PO4 & 600 µg/mL Mg(NO3)2 in 2% HNO3

Pre-Mixed GFAA Matrix Modifier 3: 10 mg/mL NH4H2PO4 & 600 µg/mL Mg(NO3)2 in 2% HNO3