Tin Standard Solution preparation:
Tin Standard Solution (5 ppm Sn):
Dissolve tin equivalent to 0.500 g of Sn in a mixture of 5 mL of water and 25 mL of hydrochloric acid and dilute to 1000.0 mL with water. Dilute the solution to 100 times its volume with a 2.5 per cent V/V solution of hydrochloric acid immediately before use.
Tin Standard Solution (0.1 ppm Sn):
Immediately before use, dilute tin standard solution (5 ppm Sn) to 50 times its volume with water.
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