S.N

Reagent/Sample

Blank

Standard

Test

1

Urine

1 ml

2

Standard

1 ml

3

Distilled Water

1 ml

4

CuSO4 (0.01) M

1 ml

1 ml

1 ml

5

NaOH (2.5) M

1 ml

1 ml

1 ml

6

6.6% H2O2

1 ml

1 ml

1 ml

7

3N H2SO4 (with agitation)

4 ml

4 ml

4 ml

8

5% P-dimethylamionbenzaldehyde

2 ml

2 ml

2 ml