Systems, sensor assemblies and methods

A system for reducing interference by one or more bubbles in a liquid in a sensing assembly, the system comprising:

• a sensing assembly comprising a sensing surface, the sensing surface being configured to receive the liquid and the sensing assembly configured to provide a measurement signal indicative of an interaction of the sensing surface with the liquid;
• a fluid channel defining a flow path configured to provide liquid to the sensing surface, the fluid channel comprising a first surface;
• and
• a bubble prevention arrangement arranged in and/or fluidly connected to the fluid channel for preventing one or more bubbles from interfering with the sensing surface, the bubble prevention arrangement comprising a bubble collection region in which one or more bubbles can be collected,
• wherein the bubble prevention arrangement comprises a second surface located in the fluid channel;
• and
• wherein:
• the bubble collection region comprises the second surface and the second surface has a higher affinity for bubbles relative to the first surface so that the second surface retains one or more bubbles within the bubble collection region;
• and/or
• the bubble collection region is separate to and fluidly connected to the fluid channel via an opening in the fluid channel and the second surface is configured to divert at least a portion of any bubbles passing through the fluid channel to the opening.