Press Release

HY-ENERGY LLC SIGNS AGREEMENT FOR HYDROGEN STORAGE MATERIALS AND GAS SORPTION EQUIPMENT WITH SIGMA-ALDRICH

Newark CA August 25, 2007 – Hy-Energy LLC is pleased to announce it has signed a global agreement with Sigma-Aldrich (NASDAQ: SIAL), a leading $1.7 billion Life Science and High Technology company, to market Hy-Energy’s gas sorption analytical measurement equipment. Uses of Hy-Energy’s gas sorption instruments include hydrogen and other gas storage materials development, petrochemical, catalysis, food and pharmaceutical process and packaging, and other research where precise gas sorption measurements are required.
Under the terms of the agreement, Sigma-Aldrich will market the PCTPro-2000 gas sorption analyzer and offer related materials to be used with the system for demonstration and research purposes through the Sigma-Aldrich Materials Science initiative of its Research Specialties business. Hy-Energy will market Sigma-Aldrich hydrogen storage materials used in conjunction with the PCTPro-2000 equipment and contribute to our continuing development of innovative materials in such areas as hydrogen storage and gas analysis.

“ We believe that PCTPro-2000 is the most versatile and robust Sieverts-type apparatus currently available on the research market. We hope that our joint effort in developing novel materials and advanced measurement systems will accelerate research in crucial areas of Renewable Energy Science such as hydrogen storage and fuel cell technology,” said Dr. Viktor Balema, Product Manager, Sigma-Aldrich Materials Science.
Dr. Karl Gross, CEO of Hy-Energy LLC, added: “Sigma-Aldrich is renowned for its specialty research-grade chemical products and strong materials science background. We are pleased to join efforts with Sigma-Aldrich to advance materials research around the globe. Both companies’ unique expertise will make significant contributions in the area of renewable energy R&D.”
Hy-Energy LLC will continue to offer their equipment through its global distribution network. Learn more about the PCTPro-2000 instruments at http://www.sigma-aldrich.com/pctpro and Hydrogen Storage Materials at http://www.sigma-aldrich.com/hydrogen.

About Hy-Energy: Founded in 2000 by Karl Gross, Ph.D., Hy-Energy is a privately-held company, which designs and manufactures high performance test and measurement instruments. Hy-Energy also provides consulting and measurement services for testing gas sorption properties of materials including those for hydrogen storage as well as other gas sorption applications. Hy-Energy is the only company that offers the highest quality Sieverts' instruments and materials science in the ever-expanding field of renewable energy research. For more information about Hy-Energy, please visit our Web site at http://www.hy-energy.com.

About Sigma-Aldrich: Sigma-Aldrich is a leading Life Science and High Technology company. Its biochemical and organic chemical products and kits are used in scientific and genomic research, biotechnology, pharmaceutical development, the diagnosis of disease and as key components in pharmaceutical and other high technology manufacturing. The Company has customers in life science companies, university and government institutions, hospitals, and in industry. Over one million scientists and technologists use its products. Sigma-Aldrich operates in 36 countries and has 7,600 employees providing excellent service worldwide. Sigma-Aldrich is committed to Accelerating Customer Success through Leadership in Life Science, High Technology and Service. For more information about Sigma-Aldrich, please visit its award-winning Web site at sigma-aldrich.com.

Cautionary Statement: This release contains forward-looking statements relating to future performance, goals, strategic actions and initiatives and similar intentions and beliefs and other statements regarding the Companies’ expectations, goals, beliefs, intentions and the like, which involve assumptions regarding the Companies’ operations and conditions in the markets the Companies serve. The Companies do not undertake any obligation to update these forward-looking statements.