Abstract: A connector to enable connection between a device that is typically poorly supported meaning that when the connector is brought into contact with the device there can be little force applied to the device in order that it does not move. A device may be a flexible disposable bioreactor wherein a probe is secured within the bioreactor and a connection enables a reading to be taken from the electrodes of the probe. The connector includes a device connection arrangement, a collar rotatable between a first configuration enabling releasable engagement with a device and a second configuration wherein the device is restrained by the collar. A shoulder is provided in the device connection arrangement to limit insertion of at least a portion of the device into the recess wherein the shoulder aligns at least a portion of the device with a channel provided in the radially inwardly surface of the collar.

Abstract: An improved probe designed in particular but not exclusively for measuring the concentration of live biomass. The probe has an insulating body portion arranged to carry a first and second electrode where the probe has a longitudinal axis and the first and second electrodes extend in this longitudinal axis. The body portion has a cross-sectional area perpendicular to the longitudinal axis defined by a major axis and minor axis, wherein the length of the body portion in the major axis is greater than the length of the body portion in the minor axis. The first and second electrodes are positioned on either side of the major axis. This reduces the effect of impedance between the electrode and the liquid through increasing the effective distance between the electrodes.