Magnetic separator (1,101,201) including: a collection chamber (3,103,203) having an inlet (5,105,205) for receiving a flow of fluid susceptible of containing suspended particles having ferromagnetic properties and an outlet (7, 107, 207) for allowing the fluid to flow out of the collection chamber; a fluid flow path defined between the inlet and the outlet, including an interior (9, 109, 209) of the collection chamber; a substantially tubular sleeve (11, 111, 211) positioned in the fluid flow path interiorly of the collection chamber, the substantially tubular sleeve having a fluid tight interior (12,112,212); a magnet device (13, 113, 213) accommodated within the fluid tight interior of the substantially tubular sleeve for creating a magnetic field on at least a first exterior portion of the substantially tubular sleeve; wherein the magnet device is adapted for translatory movement along a predefined first path (16A, 116A, 216A) in a first sense in the substantially tubular sleeve; wherein the magnetic separator (1, 101, 201) further includes a substantially elongate flexible member (19, 119, 219) having a first end (19A, 119A, 219A) attached to the magnet device and a second end (19B, 119B, 219B) extending externally of the substantially tubular sleeve, the second end of the flexible member being arranged to be subjected to an actuating movement along a second path (16B, 116B, 216B) in a second sense so as to actuate the translatory movement of the magnet device, whereby the magnetic device is movable from a first position for collecting particles having ferromagnetic properties to a second position axially spaced from the first position for releasing collected particles having ferromagnetic properties, characterized by a resilient member (17, 117, 217) arranged for biasing the magnet device (13, 113, 213) into the first or second position. a collection chamber (3,103,203) having an inlet (5,105,205) for receiving a flow of fluid susceptible of containing suspended particles having ferromagnetic properties and an outlet (7, 107, 207) for allowing the fluid to flow out of the collection chamber; a fluid flow path defined between the inlet and the outlet, including an interior (9, 109, 209) of the collection chamber; a substantially tubular sleeve (11, 111, 211) positioned in the fluid flow path interiorly of the collection chamber, the substantially tubular sleeve having a fluid tight interior (12,112,212); a magnet device (13, 113, 213) accommodated within the fluid tight interior of the substantially tubular sleeve for creating a magnetic field on at least a first exterior portion of the substantially tubular sleeve; wherein the magnet device is adapted for translatory movement along a predefined first path (16A, 116A, 216A) in a first sense in the substantially tubular sleeve; wherein the magnetic separator (1, 101, 201) further includes a substantially elongate flexible member (19, 119, 219) having a first end (19A, 119A, 219A) attached to the magnet device and a second end (19B, 119B, 219B) extending externally of the substantially tubular sleeve, the second end of the flexible member being arranged to be subjected to an actuating movement along a second path (16B, 116B, 216B) in a second sense so as to actuate the translatory movement of the magnet device, whereby the magnetic device is movable from a first position for collecting particles having ferromagnetic properties to a second position axially spaced from the first position for releasing collected particles having ferromagnetic properties, characterized by a resilient member (17, 117, 217) arranged for biasing the magnet device (13, 113, 213) into the first or second position.