Magnesium Sulphate Heptahydrate is an inorganic compound with the chemical formula MgSO₄·7H₂O. It appears as a white to colorless crystalline solid and is freely soluble in water. In plant tissue culture applications, it serves as an essential source of magnesium and sulphur, both of which are vital for chlorophyll synthesis, enzyme activation, and metabolic processes.

Magnesium Sulphate Heptahydrate is a key component of plant tissue culture media, supporting healthy cell growth, photosynthetic activity, and physiological development. The extra-pure grade ensures high chemical purity, making it suitable for sensitive laboratory and research applications.