A sample collection system including a container including container walls that enclose a container cavity； a fluid inlet extending through one of the container walls； a fluid outlet extending from outside the container into the container and into the container cavity through the one of the container walls； a sample tray configured to be removably insertable through one of the container walls into the container below the fluid inlet and including a filter portion, the tray being insertable below the fluid inlet to provide a fluid path that flows from the fluid inlet through the filter portion of the sample tray to the fluid outlet during suctioning, wherein a bottom portion of the fluid outlet extends away from the one of the container walls into the container cavity below the filter portion.
