A set of 9 tubes of powder, each making 2 litres of nutrient solution when dissolved in purified water, comprising:

1) A Normal (control) containing Nitrogen as nitrate, phosphorus as phosphate, sulphur as sulphate, calcium, potassium, magnesium, iron, sodium and trace elements.

2) Nitrogen deficient - remaining elements and traces present.

3) Phosphorus deficient - remaining elements and traces present.

4) Sulphur deficient - remaining elements and traces present.

5) Calcium deficient - remaining elements and traces present.

6) Potassium deficient - remaining elements and traces present.

7) Magnesium deficient - remaining elements and traces present.

8) Iron deficient - remaining elements and traces present.

9) Sodium deficient - remaining elements and traces present.

Trace elements present: copper, zinc, manganese, boron and molybdenum.

Suitable for use with the Plant Culture Kit ZPK-660-B.