Standard Solution Method
Prepare a 0.5 mg/L manganese standard solution as follows:
a) Pipet 5.00 mL of Manganese Standard Solution, 1000 mg/ L Mn, into a 1000-mL volumetric flask.
b) Dilute to the mark with deionized water. Prepare this solution daily.
c) Pipet 10.00 mL of the solution from Step b into a 100-mL volumetric flask.
d) Dilute to the mark with deionized water. This second dilution is equivalent to 0.5 mg/L Mn. Method Performance Precision