A device for sampling fluids that has an outer conduit having a first end connected to a non-pressurized fluid reservoir and a second end adjacent to the testing location that is remote from the fluid reservoir. An inner fluid conduit is positioned within the outer conduit, the inner fluid conduit having a first end extending into the fluid reservoir and the second end adjacent to the testing location, the second end having a connector. A pressure source selectively connects to the connector and selectively applies a vacuum to the second end of the inner fluid conduit to draw fluid from the through the inner fluid conduit and applying pressure to purge the inner fluid conduit of fluid.