A container for a solid product for dialysis has a connector (200) for connection to a dialysis machine, with a filling channel (202) that crosses it from one end to the other for filling the receptacle with solid product； a fluid line (211, 212, 213) for introducing a solution-making liquid, extending between a first connecting portion (211) that opens to the outside and an orifice (213) that opens to the inside； and a fluid line (221, 222, 223, 224) for extracting the obtained solution, extending between a second connecting portion (221) that opens to the outside and an orifice (224) that opens to the inside. The filling channel (202) is open at both ends and the two fluid lines (211, 212, 213； 221, 222, 223, 224) are fluid-tight between the orifice (213, 224) that opens into the receptacle and the first or second connecting portion (221, 221), respectively.
