100 ppm Ba2+, Ca2+, K+, Li+, Mg2+, Mn2+, Na+, NH4+, Sr2+ Matrix: 0.1% HNO3 Min: >= 99.5 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Matrix: H2O Min: >= 995 Max: =< 1005 ppm Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

150 ppm SO₄ 2 -, PO₄ 3 ; 100 ppm NO₃-, 30 ppm Cl-, 20 ppm F- Matrix: H2O Min: >= 99.5 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Matrix: H2O Min: >= 995 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

150 ppm SO₄ 2 -, PO₄ 3 ; 100 ppm NO₃-, Br-, NO₂-; 30 ppm Cl-, 20 ppm F- Matrix: H2O Min: >= 99.5 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredit

100 ppm: Li+, Na+, NH₄+, K+, Ca 2 +, Mg 2 + Matrix: H2O Min: >= 99.5 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Matrix: H2O Min: >= 995 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

50 ppm Li+; 200 ppm Na+, K+, Mg 2+ ; 400 ppm NH₄₊, 1000 ppm Ca 2+ Matrix: H2O Min: >= 398 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

0.5 ppm F-, PO₄ 3+ ; 1 ppm NO_2-, NO_3-, Br-; 12.5 ppm SO₄ 2+ , Cl- Matrix: H2O Min: >= .995 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Fac

100 ppm: F-, PO₄ 3+ , NO_2-, NO_3-, Br-, SO₄ 2+ , Cl- Matrix: H2O Min: >= 99.5 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

2 ppm F-, 10 ppm PO₄ 3+ , NO_3-, Br-, SO₄ 2+ , 5ppm Cl-, NO_2- Matrix: H2O Min: >= 9.95 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

Matrix: H2O Min: >= 995 Max: =< 1005 ppm Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility

50 ppm Li+, Na+ 200 ppm; 250 ppm NH₄?, Mg 2 ? ; 500 ppm K+, Ca 2 ? 500 Matrix: H2O Min: >= 248.75 Max: = Manufactured and Tested in an ISO 17025/Guide 34 Accredited Facility