Abstract: A container comprising a fluid sampling system configured for the flow of particulate containing fluid therethrough are provided. The particulate containing fluid enters the container from the exterior through a fluid inlet and flows through a fluid flow path which includes at least two serially fluidically coupled sample collection vessels, which are releasably installed in the container. Fluid flow through the fluid flow path is controlled by a fluid pump in a manner that allows for sequential receipt of the particulate containing fluid in the sample collection vessels, and for particulates in the particulate containing fluid to settle in at least one of the sample collection vessels. Upon receipt and settlement of the particulates, the container can be opened and the sample collection vessels can be released from the container Related methods for operating the fluid sampling systems are also provided.