referring now specifically to the drawings , a bipolar ionization device is illustrated in fig1 and 2 and is shown generally at reference numeral 10 . the bipolar ionization device 10 generally comprises an electrically insulated base 12 , an anode 14 , a cathode 16 , and a power input terminal 18 . the anode 14 is a generally cylindrical tube that extends from the base 12 . the cathode 16 is spaced - apart from the anode 14 and partially circumscribes the anode 14 . the power input terminal 18 may be integral with the anode 14 or may be engaged to the anode 14 . as illustrated in fig1 , the power input terminal 18 extends through the base 12 and extends a distance from the base 12 for engaging to a power supply . as illustrated in fig2 , the power input terminal 18 and the anode 14 are integral , meaning the power input terminal 18 is formed from the anode 14 . the power input terminal 18 has a top end and a bottom end and contains threads for receiving corresponding threads of a high voltage alternating current power supply 28 and forming a selectively secured arrangement between the power input terminal 18 and the power supply 28 . in one exemplary embodiment , the power input terminal 18 is machined into the bottom end of the anode 14 . preferably , this is done by turning the end of the anode 14 on a lathe . the power input terminal 18 , as illustrated in fig2 , extends a distance away from the base 12 to allow for connection to the power supply 28 . as illustrated in fig4 , the power input terminal 18 is screwed into the power supply 28 for selectively securing the bipolar ionization device 10 to the power supply 28 . the power supply 28 similar to the one illustrated in fig4 can be purchased from bioclimatic , plasma air , atmos air , or bentax . it should be noted that alternatively , the power input terminal 18 may be a plug - in or a stab - on type connector or the like . the top end of the anode 14 contains a plurality of tines 20 . the tines 20 may be embedded into bores that are spaced along the axial length of the top end of the anode 14 . the times 20 contain a base and an upper end . the base of the tines 20 is larger than the upper end . preferably , the upper end of each tine 20 has a point . in other words , the tines 20 have a base that is embedded into a bore spaced along the axial length of the top end of the anode 14 and the top end of the tines 20 forms a point . the diameter of the tines 20 from the base to the top end gradually decreases until a point is formed . the tines 20 may be composed of stainless steel , gold , titanium , brass , or any other conductive , but oxidation resistant material . the cathode 16 is annular in shape and is designed to partially circumscribe the anode 14 . the diameter of the cathode 16 is slightly larger than the diameter of the anode 14 , thus providing a spaced apart relationship when the anode 14 is placed within the cathode 16 . the term partially circumscribes is intended to mean that the cathode 16 does not fully encompass the anode 14 . the cathode 16 has a first side and a second side that are not engaged , but are spaced apart . in one embodiment , the cathode 16 partially circumscribes the anode 14 at an angle of greater than 180 ° with respect to the anode 14 , but does not circumscribe an angle of 360 ° with respect to the anode 14 . tu the base 12 may be any type of base 12 that retains the anode 14 . as illustrated in fig2 , the base 12 contains a mounting base 22 and a retention base 24 . the mounting base 22 contains a bore 26 that extends through the center of the mounting base 22 . the bore 26 may be threaded for receiving the correspondingly threaded bottom end of the anode 14 . alternatively , the bore 26 contains no threads and allows the anode 14 to extend there through uninhibited . a correspondingly threaded nut 42 may be utilized to selectively secure the anode 14 to the base 12 , and in particular the mounting base 22 of the base 12 . the mounting base 22 contains a top portion and a bottom portion . the bottom portion of the mounting base 22 is threaded and the inside of the retention base 24 contains corresponding threads for selectively securing the mounting base 22 to the retention base 24 . in one embodiment , a conductive ring 30 is engaged to the base 12 and is disposed between the power supply 28 and the retention base 24 . as illustrated in fig3 , the conductive ring 30 contains a metal bracket 32 that circumscribes the cathode 16 . in an embodiment as illustrated in fig3 , a grounding wire 34 having a first end and a second end is shown , wherein the first end is engaged to the bracket 32 and the second end is engaged to the conductive ring 30 . the first end and the second end of the grounding wire 34 contain a circular metallic lead with a central bore , as shown in fig3 . the bracket 32 and conductive ring 30 each contain a conductive screw that is received within the central bore of the metallic lead on the first end and the second end of the grounding wire 34 . a correspondingly threaded nut is disposed on the screw for retaining the grounding wire 34 to the conductive ring 30 and bracket 32 . in lieu of the conductive ring 30 and bracket 32 , the power supply 28 may contain a grounded biasing element 40 . the grounded biasing element 40 has a bottom portion and a top portion , wherein the bottom portion is engaged to the power supply 28 and the top portion is engaged to the cathode 16 , as illustrated in fig4 . the top of the cathode 16 is retained in a spaced - apart relationship to the anode 14 with a spacer 36 . the spacer 36 may be composed of rubber or another electrically insulated material . that spacer 36 comprises a circular body with a raised shelf at one end . the spacer 36 also contains a hollow bore extending through the center of the spacer 36 . the hollow bore of the spacer 36 has a diameter slightly larger than the diameter of the anode 14 for receiving the upper portion of the anode 14 into the hollow bore . the circular body of the spacer 36 has a diameter slightly smaller than the diameter of the cathode 16 , allowing the cathode 16 to fit around the circular body of the spacer 36 . the spacer 36 is designed to receive a retention pin 38 that is received within the upper portion of the hollow bore of the spacer 36 and selectively secures the anode 14 to the spacer 36 . the anode 14 may be composed of any material that can conduct electricity . in one embodiment of the present invention , the anode 14 may be composed of brass or any other conductive , oxidation resistant material . the tines 20 can also be manufactured out of any material that conducts electricity , but in one embodiment the tines 20 are manufactured out of tungsten or stainless steel . the cathode 16 may be manufactured from stainless steel or any other conductive , oxidation resistant material . it should be noted that the cathode 16 and anode 14 may be of various sizes depending upon the uses and desires of the user and the size of the hvac duct that bipolar ionization device 10 will be inserted . in one use , the bipolar ionization device 10 may be installed in a heating , ventilation and air condition ( hvac ) duct . the bipolar ionization device 10 is engaged to a power supply 28 and the bipolar ionization device 10 is inserted into a duct so that the air flows perpendicular to longitudinal length of the tines 20 on the anode 14 . in other words , bipolar ionization device 10 should be positioned such that the tines 20 are upright in relation to the air flow and the air flow is able to flow between the tines 20 . during use , the power supply 28 supplies power to the power input terminal 18 , and the electrons flow along the length of the anode 14 . as the electrons progress upwards from the power input terminal 18 along the anode 14 , the electrons contact the tines 20 and flow up the tines 20 from the base to the pointed upper end . when the electrons reach the pointed upper end of the tine 20 , the electrons flow from the pointed upper end of the tine 20 of the anode 14 to the cathode 16 that partially circumscribes the anode 14 . not all of the electrons that flow from the anode 14 are collected by the cathode 16 . instead , the electrons that are not collected by the cathode 16 flow into the surrounding area and collide with air molecules and particles in the air stream , thus ionizing the air molecules and particles . the ionization of the air aids in cleaning the air , removing odors , and helps reduce pollutants . the present invention is an advancement over prior art bipolar ionization tubes in that the present invention saves energy , minimizes corona discharge , eliminates costly replacement parts , and is not fragile or easily breakable . although the present invention has been illustrated and described herein with reference to preferred embodiments and specific examples thereof , it will be readily apparent to those of ordinary skill in the art that other embodiments and examples may perform similar functions and / or achieve like results . all such equivalent embodiments and examples are within the spirit and scope of the present invention and are intended to be covered by the following claims .