Cobalt

Remove the indicator stick, pipette, litmus paper and vial (colourless Reagent 1) from the large test tube
Cut the litmus paper into a few pieces - about 5 to 6 small pieces
In the empty large test-tube, add 5 ml. of the solution to be tested
Check the pH solution to be tested in the large test-tube by dropping a piece of litmus paper in it
If the solution is too alkaline (the litms paper turns blue), add 2 drops of the colourless Reagent 1 from the clear-cap vial with the help of the pipette into the solution in the large test-tube
Shake the large test-tube gently to mix the solutions. Check again by dropping another piece of litmus paper into the mixed solution in the large test tube
If the solution is too alkaline, repeat steps (v) and (vi). Repeat this procedure until the mixed solution in the large test-tube turns the litmus paper pink or red (acidic)
The solution is now ready for testing

Conducting the test

Put the indicator stick into the mixed solutions in the large test-tube for one (1) second. The reaction area of the indicator stick must be completely immersed in the solution in the large test-tube
Pull out the indicator stick and shake off any excess liquid
Wait 15 seconds and compare the colour of the indicator stick to the colour strip provided

Colour strip

The numbers indicate parts per million.

Sample of a hmt Cobalt Test kit