Abstract: A plug connector module for a modular industrial plug has a connection side for connecting a conductor of a cable, in particular a multi-wire cable, and a contact side for electrically connecting to a mating plug connector module. Precisely one connection opening for a conductor of the cable is provided on the connection side, and at least two contact openings are provided on the contact side for accessing a mating plug connector module. The plug connector module has a bridge contact element which has precisely one connection region for an electric conductor, and the connection region is paired with the connection opening, wherein the bridge contact element has at least two contact regions for contacting a respective mating contact element of a mating plug connector module, and each contact region is paired with a contact opening.

Abstract: A set of bottles for containing dialysate chemical formulations, chemical cleaning agents or the like is described. The chemical formulation bottles come in two varieties, sodium bicarbonate and liquid acid formulations, each bottle having a slightly different shape. The different shapes cooperate with a bottle mounting structure in the dialysis machine to insure that bottles are correctly installed on their respective bottle opening mechanism. The bottles also have a detection feature comprising either a raised rim or groove extending around the periphery of the bottle. A sensor assembly in the bottle mounting and opening system detects the detection feature. The detection feature is used by the machine to distinguish between dialysate formulation bottles and chemical cleaning bottles, which do not have the detection feature. The detection feature prevents unintentional installation of the chemical bottle on the opening mechanism for the dialysate chemical formulation bottles.