Name:Quality Control standard, 7 components conc. Varied ug/ml in 2-5% Nitric Acid/Tr. HF ml 100 Solvent:2-5% Nitric acid/Tr. Hydrofluoric acid Molecular Weight (g/mol):N.D. N. of components7 Components Notes:Shelf Life 24 Months (min. from delivery 13); Storage at Ambient (>5 °C)