Heller Microelements (100X) is supplied by HiMedia. It is available in the form of a yellow to greenish yellow, homogeneous, free flowing powder with a pH in the range of 3.8 to 4.8. Since this product is extremely hygroscopic, it is advisable to store it at 2-8C, in air tight containers. The composition (mg/ml) is as follows:

Manganese sulphate.H2O (0.08)

Boric acid (1.00)

Potassium iodide (0.01)

Zinc sulphate.7H2O (1.00)

Copper sulphate.5H2O (0.03)

Aluminium chloride.6H2O (0.05)

Nickel chloride.6H2O (0.03)

Ferric chloride.6H2O (1.00)

Heller microelements (100X) powder has been specially formulated for plant cell, tissue and organ cultures. The powder contains inorganic microelements and iron source. The vial contains 0.23 grams of dehydrated microelements that is sufficient for making 100 litres of complete medium.