Abstract: A material cartridge arrangement (100, 101) for a dispensing system, comprising a material cartridge (2) having a first end (2a), an opposing second end (2b) and an ink material channel (5) extending between the first and second ends in the material cartridge (2), the ink material channel (5) being bounded by an ink material channel wall/walls (9) extending between the first (2a) and second ends (2b). An ink material pressurising device (3) is arranged to cause ink material hold in the ink material channel (5) to flow in a direction from said first end (2a) towards said second end (2b) and through an ink material outlet. At least one temperature sensing element (16) is arranged at a position along the direction of extension of the ink material channel (5) and arranged to measure a temperature at the ink material channel wall (9).