A filter capsule apparatus comprising: a container having a substantially cylindrical wall and portions defining a bottom end; a top cap secured to a top end of the container, wherein the combination of the substantially cylindrical wall, the bottom end and the top cap defines a filter chamber having a top chamber end and a bottom chamber end; a cylindrical filter secured in the chamber, wherein an annular space is defined by the inner surface of the substantially cylindrical wall and an exterior surface of the filter, wherein the annular space extends uninterrupted the entire axial length of the filter, and wherein heated fluid is permitted to enter the filter radially inwardly along the axial length of the filter from the annular space; a plurality of ports (24, 26, 28) including an inlet port and an outlet port extending from the top cap, and, characterized in that the filter capsule apparatus further comprises a transfer tube having an elongate cylindrical wall connected along its length to, and extending along a substantial length of, the container wall, wherein a portion of the tube wall along its axial length is integral with, or registered against, the container wall, wherein a fluid receiving first end is secured to, and in fluid communication with, the inlet port and a fluid delivery second end is secured in close proximity to the bottom of the container, wherein the second end is in fluid communication with the bottom chamber end, whereby when heated fluid is introduced into the filter capsule, it enters through the inlet port, travels downwardly inside the transfer tube, exits the transfer tube second end into the bottom chamber end, flows upwardly in the annular space of the filter chamber, is filtered by the filter, flows out of the filter and exits the filter capsule apparatus via the outlet port. a container having a substantially cylindrical wall and portions defining a bottom end; a top cap secured to a top end of the container, wherein the combination of the substantially cylindrical wall, the bottom end and the top cap defines a filter chamber having a top chamber end and a bottom chamber end; a cylindrical filter secured in the chamber, wherein an annular space is defined by the inner surface of the substantially cylindrical wall and an exterior surface of the filter, wherein the annular space extends uninterrupted the entire axial length of the filter, and wherein heated fluid is permitted to enter the filter radially inwardly along the axial length of the filter from the annular space; a plurality of ports (24, 26, 28) including an inlet port and an outlet port extending from the top cap, and, characterized in that the filter capsule apparatus further comprises a transfer tube having an elongate cylindrical wall connected along its length to, and extending along a substantial length of, the container wall, wherein a portion of the tube wall along its axial length is integral with, or registered against, the container wall, wherein a fluid receiving first end is secured to, and in fluid communication with, the inlet port and a fluid delivery second end is secured in close proximity to the bottom of the container, wherein the second end is in fluid communication with the bottom chamber end, whereby when heated fluid is introduced into the filter capsule, it enters through the inlet port, travels downwardly inside the transfer tube, exits the transfer tube second end into the bottom chamber end, flows upwardly in the annular space of the filter chamber, is filtered by the filter, flows out of the filter and exits the filter capsule apparatus via the outlet port.