ALL our Epsom Salts are top quality and 100% organic (No chemical additives or processing). They are mined by K+S Kali in Germany under strict European Union Quality Control Procedures. We are confident that the combination of quality and price of our salts cannot be beaten. Beware of cheaper, inferior, man made Magnesium Sulphate imported from other parts of the world or those that claim to be K+S Kali but are not. Always check, the place of origin and the manufacturers certification. K+S Kali quality certification applies to the purchase of 25kg sacks. Smaller quantities are repackaged under strictly controlled conditions in our separate, purpose-built clean room facility.