Potassium Metabisulfite in Powder Form finds application in photography and food preservative industries. Potassium Metabisulfite is offered in white crystalline powder form. Potassium Metabisulfite is free from extraneous matter with a faint odour of sulphur dioxide gas. Potassium Metabisulfite in Powder Form is packed in 25 Kg. / 50 Kg. HDPE bags with extra liner inside.