Abstract: A microfluidic device for measuring an amount of an oxidant in a solution is disclosed. The device includes a microfluidic substrate configured to mix a solution sample to be analysed with an indicator dye solution containing an indicator dye under conditions suitable for some of the indicator dye to react with any oxidant in the solution to produce an oxidant measurement solution having a reduced indicator dye concentration that is indicative of the amount of oxidant in the solution, the microfluidic substrate including an optical reading window through which the reduced indicator dye concentration in the oxidant measurement solution can be measured optically.

Abstract: A microfluidic device for measuring an amount of an oxidant in a solution is disclosed. The device includes a microfluidic substrate configured to mix a solution sample to be analysed with an indicator dye solution containing an indicator dye under conditions suitable for some of the indicator dye to react with any oxidant in the solution to produce an oxidant measurement solution having a reduced indicator dye concentration that is indicative of the amount of oxidant in the solution, the microfluidic substrate including an optical reading window through which the reduced indicator dye concentration in the oxidant measurement solution can be measured optically.

Abstract: Disclosed herein is a fluid connection port for forming a working fluid connection between a deformable, flexible tube and a fluid handling device, the fluid connection port comprising a bore extending from an exterior surface of the fluid handling device to an internal fluid handling feature, the bore comprising a narrow diameter bore section adjacent the exterior surface of the fluid handling device, a larger diameter bore section adjacent the internal fluid handling feature, and a shoulder separating the narrow diameter bore section and the larger diameter bore section, wherein the diameter of the bore at the narrow diameter bore section is less than the outside diameter of the deformable, flexible tube.