Arrhythmia Research Technology, Inc. Announces 3-Year Agreement with IDEXX Laboratories.

FITCHBURG, Mass. -- Arrhythmia Research Technology, Inc. (AMEX: HRT) announced that its wholly owned subsidiary Micron Products Inc. ("Micron"), has entered into a three-year agreement with IDEXX Laboratories (IDXX), a market leader in veterinary diagnostic testing solutions, to manufacture consumable plastic injection molded products for IDEXX's production animal services division. Micron, through its New England Molders division ("NEM"), will provide manufacturing services from product development to production of complex consumable test products.

James E. Rouse, President and CEO of Arrhythmia Research Technology, Inc., commented, "We are very excited to have been chosen as a supplier of choice for IDEXX Laboratories, a leader in veterinary health. This agreement has significant long term benefits to both Micron and IDEXX. The opportunity to support the leader in this growth industry is a point of pride throughout our organization. The close working relationship between the two companies will continue as we strive to expand the scope of our supply agreement to additional IDEXX product groups.

The agreement demonstrates the establishment of a mutually beneficial customer supplier relationship. Micron's expansion into veterinary consumable products and diagnostic test products for the production animal industry is a complement to our current manufacture of high quality medical products."

About Arrhythmia Research Technology, Inc.

The Company, through its wholly owned subsidiary Micron Products Inc., produces silver plated and non-silver plated conductive resin sensors and distributes metal snaps for manufacturers of disposable ECG, EEG, EMG and TENS electrodes. Micron's New England Molders division manufactures injection molded products for medical, electronic, industrial and consumer applications. The Company's products also include proprietary signal-averaging electrocardiographic (SAECG) software used in the detection of potentially lethal heart arrhythmias.

About IDEXX Laboratories

IDEXX Laboratories, Inc. is a leader in companion animal health, serving practicing veterinarians around the world with innovative, technology-based offerings, including a broad range of diagnostic products and services, practice-management systems and therapeutics. IDEXX products enhance the ability of veterinarians to provide advanced medical care and to build more economically successful practices. IDEXX is also a worldwide leader in providing diagnostic tests and information for the production animal industry and tests for the quality and safety of water and milk. Headquartered in Westbrook, Maine, IDEXX Laboratories employs more than 3,000 people and offers products to customers in over 100 countries.

Note Regarding Forward Looking Statements

Forward-looking statements made herein are based on current expectations of the Company that involve a number of risks and uncertainties and should not be considered as guarantees of future performance. The factors that could cause actual results to differ materially include: interruptions or cancellation of existing contracts, impact of competitive products and pricing, product demand and market acceptance, risks, the presence of competitors with greater financial resources than the Company, product development and commercialization risks, changing economic conditions in developing countries, and an inability to arrange additional debt or equity financing. More information about factors that potentially could affect the Company's financial results is included in the Company's filings with the Securities and Exchange Commission, including its Annual Report on Form 10-KSB for the year ended December 31, 2004.