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

100 ppm each element in 5% Nitric Acid. Ce 100 ug/ml Dy 100 ug/ml Er 100 ug/ml Eu 100 ug/ml Gd 100 ug/ml Ho 100 ug/ml La 100 ug/ml Lu 100 ug/ml Nd 100 ug/ml<

Acidimetric standard

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

Concentration (as SiO₂) 1,000 +/- 10 ug/ml Matrix: Na₂SiO₃, water

NH₂SO₂OH F.W.: 97.10 NFPA#: 2-0-2 Specific Gravity: 0.000 DOT: 8/III

100 ppm each element in 20% Hydrochloric Acid with a trace of HF. Arsenic 100 +/- 1 ug/mL Bismuth 100 +/- 1 ug/mL Gallium 100 +/- 1 ug/mL Germanium 100 +/- 1 ug/mL Indium 100 +/- 1 ug/mL

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

Concentration 1,000 +/- 10 ug/ml Matrix: 20% Hydrochloric acid NIST Traceable

Concentration 10,000 +/- 100 ug/ml Matrix: 2% Hydrofluoric acid NIST Traceable

UV cutoff 260 nm

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% HNO3 NIST Traceable

Acid-base titrimetry

AA, colorimetric or volumetric standard. Concentration 1,000 +/- 10 ug/ml Matrix: Nitric acid NIST Traceable

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

NFPA#: 1-0-1 Specific Gravity: 1.010 AA, colorimetric or volumetric standard

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

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

Concentration 10,000 +/- 100 ug/ml Matrix: 20% Hydrochloric acid NIST Traceable

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

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

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

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

100 ppm each element. Al 100 ug/ml Sb 100 ug/ml As 100 ug/ml Ba 100 ug/ml Be 100 ug/ml Ca 100 ug/ml Cd 100 ug/ml Co 100 ug/ml Cr 100 ug/ml Cu 100 u

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

Concentration 10,000 +/- 100 ug/ml Matrix: 20% Hydrochloric acid NIST Traceable

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 1,000 +/- 10 ug/ml Matrix: <5% HNO3 NIST Traceable

Concentration 1,000 +/- 10 ug/ml Matrix: 2% Hydrofluoric acid NIST Traceable