1. NeSSI Micro-analytics Workshop May 4 th 2003 CPAC Micro-Analytics Workshop Overview of Micro-analytical Technologies and Hurdles to Development and Commercialization

2. NeSSI Micro-analytics Workshop May 4 th 2003 H2scan Company Summary Company Introduction Hydrogen Sensing Technologies Competitive Technology’s Comparison Chart Tomorrow’s Hydrogen Market

3. NeSSI Micro-analytics Workshop May 4 th 2003 Company Introduction Based in Valencia (Los Angeles) California Restart from DCH Sensor Division Asset Purchase completed on Sept. 19 th 2002 Three product lines in Retail production

4. NeSSI Micro-analytics Workshop May 4 th 2003 H 2 Sensing Technologies H2scan Technology Today’s Tomorrow’s Competitive Technologies Comparison Chart

5. NeSSI Micro-analytics Workshop May 4 th 2003 Exclusive license 96-C00333 from Sandia National Labs for patents # 5,279,795 (May 7,1996) Patent on two sensing technologies, a low concentration H-FET and a high concentration Chem-Resistor, giving a total concentration range from 50 ppm to 99.9%. Use of catalytic material Pd-Ni provides large range, minimal calibrations and hydrogen specificity. H2scan Technology

6. NeSSI Micro-analytics Workshop May 4 th 2003 H2scan Technology Pd readily catalyzes H 2 (molecular) into 2 H (atomic). The atomic hydrogen moves into the lattice of the Pd (alloy) film. An equilibrium hydrogen density is reached proportional to gas concentration.

7. NeSSI Micro-analytics Workshop May 4 th 2003 Hydrogen absorbed into the Pd alloy lattice changes the bulk resistivity. H2scan’s Hydrogen- Sensing Resistor (HRES) uses this property to measure Hydrogen from 0.5% to multiple atmospheres. i V H2scan Technology

8. NeSSI Micro-analytics Workshop May 4 th 2003 Hydrogen absorbed into the Pd alloy lattice changes the charge density at a dielectric interface. H2scan’s Hydrogen-Sensing Field-Effect Transistor (HFET) uses this property to measure Hydrogen from 50 ppm to 1%. + + H2scan Technology

9. NeSSI Micro-analytics Workshop May 4 th 2003 H2SCAN Featured Product Hand-Held Hydrogen Detector State-of-art Portable Hydrogen Leak Detection Micro-processor design provides exceptional versatility Technical excellence

10. NeSSI Micro-analytics Workshop May 4 th 2003 H2SCAN Featured Product Portable Leak Detector Kit All-in-one packaging

11. NeSSI Micro-analytics Workshop May 4 th 2003 H2SCAN Featured Product 0% to 100% hydrogen 1 atmosphere to 450 psig Gas temperature from 0 to 110  C Hydrogen Process Monitoring System with Application Flexibility

12. NeSSI Micro-analytics Workshop May 4 th 2003 H2SCAN Featured Product Hydrogen Process Monitoring System (Shown in Class1, Division1 Enclosure) System monitors hydrogen used as a cooling gas in electric generator Monitors 100% hydrogen @ 2 Atmospheres

13. NeSSI Micro-analytics Workshop May 4 th 2003 H2SCAN Multi-Sensor System MAIN PANEL REMOTE PANEL

14. NeSSI Micro-analytics Workshop May 4 th 2003 H2SCAN Future Product Modular Fixed Area Monitor Leak detection Process monitoring Process control Temperature and pressure- compensated hydrogen readings Low cost sensor heads can be multiplexed

15. NeSSI Micro-analytics Workshop May 4 th 2003 Next-Generation H2scan Sensor Wide Range Sensor (WRS) Hydrogen specific 50 ppm to 100% capability Potential to meet cost targets associated with the Hydrogen Fueled Economy 1 st Deliveries scheduled for QIII 2004

16. NeSSI Micro-analytics Workshop May 4 th 2003 H2SCAN Future Product Low-cost sensor designed to meet the needs of the fuel cell and automotive industries Safety applications 50 ppm threshold Process monitoring and control To 100% hydrogen sensing Pressure and temperature compensated hydrogen readings Low power MEMS technology

17. NeSSI Micro-analytics Workshop May 4 th 2003 Wide Range Sensor Rendering via 0.15" 0.12"

18. NeSSI Micro-analytics Workshop May 4 th 2003 Mitsubishi Teledyne Analytical Instruments

19. NeSSI Micro-analytics Workshop May 4 th 2003 Current Distributors Teledyne Instruments (World wide non Exclusive) Mitsubishi (Distribution Agreement in process) Trans Pac sales (Asian Market) Toyoda Micro Systems (Asian Markets)

20. NeSSI Micro-analytics Workshop May 4 th 2003 H2scan contact Information Address: 25133 Anza Dr Valencia CA 91355 Main Switchboard: (661) 775 9575 Sales: Ext 387 Engineering Ext 618 Website: www.h2scan.comwww.h2scan.com