Potassium Standard Solution (100 ppm K)
Immediately before use, dilute with water R to 20 times its volume a solution containing dipotassium sulfate R equivalent to 0.446 g of K2SO4 in 100.0 mL.
Immediately before use, dilute with water R to 20 times its volume a solution containing dipotassium sulfate R equivalent to 0.446 g of K2SO4 in 100.0 mL.