Method and dialysis machine including calibration container

A method for calibrating an ultrafiltration pump in a dialysis machine, the ultrafiltration pump having a pump inlet and a pump outlet, the ultrafiltration pump being adapted to pump fluid from the pump inlet to the pump outlet, the dialysis machine having first and second hoses, the first hose having first and second ends, the first end of the first hose being fluidly coupled to the pump inlet, a second hose having first and second ends, the first end of the second hose being fluidly coupled to the pump outlet, the method comprising the steps of:

• providing a calibration fluid container, the container including a bottom, an upstanding sidewall, a container inlet and a container outlet, the bottom and the upstanding sidewall defining a container interior, the sidewall of the container including a plurality of graduations, the container defining an opening to the atmosphere, at least the container outlet being disposed in the sidewall proximate to the bottom,
• removably, fluidly coupling the second end of the first hose to the container outlet, and
• removably, fluidly coupling the second end of the second hose to the container inlet,
• performing a calibration process on the ultrafiltration pump,
• decoupling the second end of the first hose from the container outlet, and
• decoupling the second end of the second hose from the container inlet.