a test fluid collection system, for collection of a quantity of a test fluid to be diluted for analysis the system comprising a housing comprising a collection tip for collecting a sample, a dispensing inlet and a dispensing nozzle; wherein the collection tip is at a first end of the housing, and is for contacting a sample of the test fluid; wherein the collection tip and dispensing nozzle are at opposite ends of said housing; wherein the dispensing inlet is proximal to the collection tip, and in fluid communication via a dispensing channel to the dispensing nozzle which runs through said housing; wherein the housing is adapted to be fitted into the opening of a liquid container containing liquid for diluting the quantity of the test fluid, with said tip and said dispensing inlet within said container, and with a seal fit between said opening and said housing; wherein the dispensing nozzle is adapted to dispense diluted test fluid from the container when the volume of said container is reduced; and wherein the tip includes two spaced apart hydrophilic surfaces that draw a metred quantity of test fluid by capillary action.