1. PHOTOVAC, Inc. Voyager Gas Chromatograph Concept

2. PHOTOVAC, Inc. Voyager Basics Truly portable –Only 15 pounds (6.8kg) with battery installed –15.4” (39cm) long x 10.6” (27cm) wide x 5.9” (15cm) high Multiple Column, Dual Detector Portable GC –3 Columns (Heavy, Middle, and Light Compounds) –PID (Photoionization Detector) and optional ECD (Electron Capture Detector) 3 Levels of Instrument Operation –Factory programmed methods –User modified methods –Total VOC quick screen mode Intrinsically Safe (Class 1, Division 1, Groups A,B,C & D) –The only portable GC with this classification

3. PHOTOVAC, Inc. Voyager Basics Completely self-contained –Internal carrier gas cylinder –Oven –Battery Internal data logger –On-board data handling provides immediate results –No laptop needed in field Comprehensive Windows software for data download and reports Easy to use –Minimal training required for point & press operation

4. PHOTOVAC, Inc. Carrier Gas: –High Purity Nitrogen or Ultra Zero Air –Carrier Life: 8 hours at 1800 psi –Carrier Flow Control via Software (Pressure) Column Oven: –Isothermal 55 o C to 80 o C –Higher temperatures help clean out columns and avoid contamination Detector & Injection Port Heated to Column Temperature Two Sampling Methods –Variable Volume Sample Loop –Syringe Injection Voyager Chromatography

5. PHOTOVAC, Inc. Voyager Chromatography Benefits of the 3 column set –Overlapping selectivities cover Heavy compounds (C 7 to C 12 ) Middle compounds (C 3 to C 7 ) Light compounds (C 1 to C 3 ) Simplified method development Columns do not degrade Vapor phase injections only Moderate temperatures with no ramping

6. PHOTOVAC, Inc. Carrier Gas (N 2 ) Pre-Column Column A Column B Column C Make-Up Carrier Gas PID ECD Precolumn: 4m x 0.53mm x 2.0 um SPB-35 Column A (HEAVY): 8m x 0.25mm BLANK Fused Silica Column B (MID-RANGE): 20m x 0.32mm x 1.0 um Supelcowax10 (PEG) Column C (LIGHT): 15m x 0.32mm x 12 um Quadrex 007-1 70% 30% Column Scheme: Voyager GC Assay # 1

7. PHOTOVAC, Inc. Precolumn: 2.5m x 0.53mm x 2.0 um SPB-35 Column A (Heavy): 8m x 0.32mm BLANK Fused Silica Column B (Mid-Range): 20m x 0.32mm x 1.5 um Supelcowax 10 (PEG) Column C (Light): 1.2m x 1.6mm 1% SP1000 on 60/80 Carbopack B Precolumn Column A Column B Column C PID Carrier Gas (N 2 or UZ Air) Column Scheme: Voyager GC Assay # 2 - 7

8. PHOTOVAC, Inc. Voyager Assays Target Compounds grouped into Assays (1-7) Each Assay includes –GC Method –Integration Settings –Compound Library Assay 1 Environmental Assay –Most comprehensive with 40 compounds Assay 2-7 Occupational Health and Safety –Targeted by industry segment

9. PHOTOVAC, Inc. Assay #1 Environmental Compound List Chloromethane Vinyl Chloride Bromomethane Chloroethane Methylene Chloride 1,1-Dichloroethylene Acetone Carbon Disulfide Vinyl Acetate t-1,2-Dichloroethylene Methyl Ethyl Ketone c-1,2-Dichloroethylene Chloroform 1,1,1-Trichloroethane 1,1,2-Trichloroethane Dibromochloromethane Chlorobenzene Ethylbenzene m-Xylene p-Xylene o-Xylene Styrene Bromoform 1,1,2,2-Tetrachloroethane 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,2-Dichlorobenzene Carbon Tetrachloride Benzene 1,2-Dichloroethane Trichloroethylene 2-Chloroethyl Vinyl Ether 1,2-Dichloropropane Bromodichloromethane Methyl Isobutyl Ketone c-1,3-Dichloropropene Toluene t-1,3-Dichloropropene 2-Hexanone Tetrachloroethylene

10. PHOTOVAC, Inc. Assay #4: ABS Rubber - Acrylonitrile - 1,3-Butadiene - Styrene Assay #5: Pulp & Paper - Hydrogen Sulfide - Methyl Mercaptan - Ethyl Mercaptan - Dimethyl Sulfide (DMS) - Dimethyl Disulfide (DMDS) - Acetone - Methyl Ethyl Ketone (MEK) - a-Pinene - Methanol Assay #2: Petroleum and Petrochemical - Methanol - Ethanol - MTBE - TAME - Benzene - Toluene - Ethylbenzene - m-, o-Xylenes - Naphthalene Assay #6: Surfactant Manufacture - Ethylene Oxide - Propylene Oxide Assays #2-7: Occupational Health & Safety Assay #7: Latex Paint Monomers - Methyl Acrylate - Methyl Methacrylate - Ethyl Acrylate - n-Butyl Acrylate - iso-Butyl Acrylate - Acrylic Acid - Vinyl Acetate - Ethylene - Styrene

11. PHOTOVAC, Inc. Assay Customization Preprogrammed assays can be customized in the SiteChart software for specific applications Existing assays are modified by adding or deleting compounds Full control of all hardware and software methods development and calibration parameters Customized assays are then sent to Voyager from the PC