*Method 200.7 Instrument Performance Check, Varied conc. in 2-5% Nitric Acid, tr Hydrofluoric acid, 100 mL 7052-Method Specific 1 mg/mL in Dichloromethane is

1 mg/mL in Dichloromethane is composed of 3 analytes

This Certified Reference Material at a concentration of 5 mg/mL in Pyridine is composed of a single analyte

2 with potassium phosphate to prevent a change in pH and provide a source of phosphate

This Certified Reference Material of varied concentration in Methanol is composed of 14 analytes

and differ only in sodium chloride content and whether they were made with casein hydrolysate or Atholate™

*Method 200.7 Instrument Performance Check, Varied conc. in 2-5% Nitric Acid, tr Hydrofluoric acid, 100 mL 7052-Method Specific 1 mg/mL in Dichloromethane isThis Certified Reference Material of varied concentration in 2 5% Nitric Acid, tr Hydrofluoric acid is composed of 5 analytes. It is supplied in a unit of 100 mL and should be stored at an ambient temperature of greater than 5 C.