Preparation of Chromium standard solution
Chromium standard solution (0.1% Cr)
Dissolve 2.82 gm of dried potassium dichromate in sufficient water to produce 1000 ml.
Dissolve 2.82 gm of dried potassium dichromate in sufficient water to produce 1000 ml.
Chromium Standard Solution (100 ppm Cr)
Dissolve 0.283 gm of dried potassium dichromate in sufficient water to produce 1000 ml.
Dissolve 0.283 gm of dried potassium dichromate in sufficient water to produce 1000 ml.
Chromium standard solution (0.1 ppm Cr)
Dilute 1 volume of chromium standard solution (100 ppm Cr) to 1000 volumes with water immediately before use.
Dilute 1 volume of chromium standard solution (100 ppm Cr) to 1000 volumes with water immediately before use.
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