Concentration 1,000 +/- 10 ug/ml Matrix: 5% Nitric acid NIST Traceable

Matrix: 5% nitric acid with trace tartaric acid. Ag 100 ug/ml Al 100 ug/ml As 100 ug/ml Ba 100 ug/ml Be 100 ug/ml Bi 100 ug/ml Ca 1000 ug/ml Cd 100 ug/ml Cr

Concentration 1,000 +/- 10 ug/ml Matrix: 5% Nitric Acid NIST Traceable

1000 ppm Ca; 100 ppm As, B, Be, Fe, Se, Zn; 10 ppm Ag, Al, Ba, Bi, Cd, Co, Cr, Cu, Ga, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Rb, Sr, Te, Tl, U, V Matrix: 5% HNO3 Min: >= 9.95 Max: = Manufactured and Tested in an ISO 17025/Guide 34

1000 ppm Ca, Fe, K, Mg, Na, Sr; 10 ppm Ag, Al, As, Ba, Be, Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb, Sb, Se, Tl, V, Zn, Th, U Matrix: 5% HNO3 Min: >= 9.95 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Matrix: 5% HNO3 Min: >= 995 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

10 ppm: Ag, Al, As, Ba, Be Ca, Cd, Co, Cr, Cs, Cu, Fe, Ga, Hg, K, Li, Mg, Mn, Na, Ni, Pb, Rb, Se, Sr, Tl, U, V, Zn Matrix: 5% HNO3 Min: >= 9.95 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Matrix: 5% HNO3 Min: >= 9950 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Concentration 1,000 +/- 10 ug/ml Matrix: 5% Nitric acid NIST Traceable

10 ppm Hg, 25 ppm Cd, Se; 100 ppm: As, Be, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn; 250 ppm V, 500 ppm Al Matrix: 5% HNO3 Min: >= 99.5 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

100 ppm: Ag, Al, As, Ba, Be, Cd, Co, Cr, Cu, Mn, Ni, Pb, Se, Th, Tl, U, V, Zn Matrix: 5% HNO3 Min: >= 99.5 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Matrix: 5% HCl Min: >= 9950 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Matrix: 5% HNO3 Min: >= 9950 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Concentration 10,000 +/- 100 ug/ml Matrix: 5% Nitric Acid NIST Traceable

Concentration 1,000 +/- 10 ug/ml Matrix: 5% Nitric Acid NIST Traceable

100 ppm: Al, Sb, As, Ba, Be, B, Cd, Ca, Cr, Co, Cu, Fe, Pb, Mg, Mn, Mo, Ni, K, Se, Si, Ag, Sr, Na, Tl, Ti, V, Zn Matrix: 5% HNO3 tr. Hf Min: >= 99.5 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facili

100 ppm each element in 5% hydrochloric acid with a trace of HF. Aluminum 100 +/- 1 ug/mL Boron 100 +/- 1 ug/mL Chromium 100 +/- 1 ug/mL Hafnium 100 +/- 1 ug/mL Molybdenum 100 +/- 1 ug/mL

Matrix: 5% HNO3 Min: >= 995 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Matrix: 5% HCl Min: >= 9950 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Concentration 1,000 +/- 10 ug/ml Matrix: 5% Nitric acid NIST Traceable

Concentration 1,000 +/- 10 ug/ml Matrix: 5% Nitric acid NIST Traceable

5000 ppm: Ca, K, Mg, Na Matrix: 5% HNO3 Min: >= 4975 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

20,000 ppm Cl, Ca 3000 ppm; 2500 ppm Fe, Na; 2000 ppm C; 1000 ppm Al, Mg, P, K, S; 20 ppm Mo, Ti Matrix: 5% HNO3 /tr HF Min: >= 1990 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Concentration 1,000 +/- 10 ug/ml Matrix: 5% Nitric acid NIST Traceable

Concentration 1,000 +/- 10 ug/ml Matrix: 5% Nitric acid NIST Traceable

Concentration 10,000 +/- 100 ug/ml Matrix: 5% Nitric Acid NIST Traceable

Matrix: 5% HNO3 Min: >= 9950 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

10 ppm: Ag, Al, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Cs, Cu, Fe, Ga, Hg, In, K, Li, Mg, Mn, Na, Ni, Pb, Rb, Se, Sr, Tl, U, V, Zn Matrix: 5% HNO3 Min: >= 9.95 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Fac

Matrix: 5% HNO3 Min: >= 9950 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

1 ppb: Be, Ce, Fe, In, Li, Mg, Pb, U Matrix: 2% HNO3/ 5% HCl Min: >= .000995 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Concentration 1,000 +/- 10 ug/ml Matrix: 5% nitric acid NIST Traceable

Concentration 10,000 +/- 100 ug/ml Matrix: <5% HNO3 NIST Traceable