2Kg Copper Sulphate Pentahydrate -Highest Purity Grade! Copper Sulphate Pentahydrate, Top Quality. Copper Sulphate Pentahydrate supplied in heavy gauge plastic pouch with resealable zip grip. Copper Sulphate, also known as Blue Vitriol and Blue Stone is the most widely used Copper salt with a worldwide production of aprox 200,000 tonnes per annum.
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