Adjustable venturi fluid mixing method

A method of mixing two fluids, comprising the steps of:

• providing an open-ended first tubular section having a sleeve defined therein wherein a flow path is defined through said sleeve and an annular channel open on one end thereof is defined between said sleeve and an inner surface of said first tubular section;
• providing an open-ended second tubular section defining an annular region with a plurality of holes and a venturi region coupled to said annular region, said annular region circumscribing at least a portion of said sleeve of said first tubular section and sealed to said sleeve;
• sealing an open-ended third tubular section to an outer surface of said first tubular section and to an outer surface of said second tubular section, wherein said annular channel is enclosed, wherein an axial relationship between said first tubular section and said second tubular section is defined by said third tubular section, and wherein at least a portion of said holes define a fluid path between said annular channel and said flow path;
• introducing a first fluid into said annular channel;
• and
• introducing a flow of a second fluid along said flow path, wherein said first fluid is drawn into said flow of said second fluid through said portion of said holes defining said fluid path.