USP <232> & <2232> Elemental Impurities Standard
 
 

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Oral Elemental Impurities A
Element Concentration Volume Matrix Part#
Cd (Cadmium) 5 mg/kg 125 mL 5% HNO3/1%HCl USP-TXM2A
Mercury (Hg) 30 mg/kg
Lead (Pb) 5 mg/kg
Arsenic (As) 15 mg/kg
Precious Metal Impurities B (with Os)
Element Concentration Volume Matrix Part#
Iridium (Ir) 100 mg/kg 125 mL 15% HCl USP-TXM3
Osmium (Os) 100 mg/kg
Palladium (Pd) 100 mg/kg
Platinum (Pt) 100 mg/kg
Rhodium (Rh) 100 mg/kg
Ruthenium (Ru) 100 mg/kg
Precious Metal Impurities B (without Os)
Element Concentration Volume Matrix Part#
Iridium (Ir) 100 mg/kg 125 mL 15% HCl USP-TXM4
Palladium (Pd) 100 mg/kg
Platinum (Pt) 100 mg/kg
Rhodium (Rh) 100 mg/kg
Ruthenium (Ru) 100 mg/kg
Oral Elemental Impurities C
Element Concentration Volume Matrix Part#
Copper (Cu) 3,000 mg/kg 125 mL 5% HNO3 USP-TXM5A
Nickel (Ni) 200 mg/kg
Molibdenum (Mo) 3,000mg/kg
Vanadium (V) 100 mg/kg
Chromium (Cr) 11,000 mg/kg
Parenteral Elemental Impurities C
Element Concentration Volume Matrix Part#
Copper (Cu) 300 mg/kg 125 mL 5% HNO3 USP-TXM5B
Nickel (Ni) 20 mg/kg
Molibdenum (Mo) 1,500mg/kg
Vanadium (V) 10 mg/kg
Chromium (Cr) 1,100 mg/kg
Parenteral Elemental Impurities D
Element Concentration Volume Matrix Part#
Lead (Pb) 5 mg/kg 125 mL 5% HNO3 USP-TXM6A
Cadmium (Cd) 2 mg/kg
Arsenic (As) 15 mg/kg
Mercury (Hg) 3 mg/kg

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