Calcium Standard Solution (10 ppm Ca)
Immediately before use, dilute with distilled water R to 100 times its volume a solution in distilled water R containing calcium carbonate R equivalent to 0.624 g of CaCO3 and 3 mL of acetic acid R in 250.0 mL.
Immediately before use, dilute with distilled water R to 100 times its volume a solution in distilled water R containing calcium carbonate R equivalent to 0.624 g of CaCO3 and 3 mL of acetic acid R in 250.0 mL.