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

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