Sulfate Standard Solution preparation:
Sulfate Standard Solution (100 ppm SO4):
Immediately before use, dilute with distilled water to 10 times its volume a solution in distilled water containing dipotassium sulfate equivalent to 0.181 g of K2SO4 in 100.0 mL.
Sulfate Standard Solution (10 ppm SO4):
Immediately before use, dilute with distilled water to 100 times its volume a solution in distilled water containing dipotassium sulfate equivalent to 0.181 g of K2SO4 in 100.0 mL.
OR
Sulfate Standard Solution (10 ppm SO4):
Immediately before use, dilute with ethanol (30 per cent V/V) to 100 times its volume a solution containing dipotassium sulfate equivalent to 0.181 g of K2SO4 in 100.0 mL of ethanol (30 per cent V/V).
Emoticon Emoticon