GentaMed (gentamicin sulfate) Soluble Powder is packaged in 360 g screw-top, moisture resistant jars with a measuring scoop. Each g of the product is equivalent to 333.33 mg of gentamicin base. One scoop (18 gm) of GentaMed (gentamicin sulfate) treats 240 gallons of drinking water at a 25 mg/gallon level making the product extremely economical to use. The product is also suitable for use in automatic water proportioners.