Silver and Fertilizer from Photo Wastes Dr. John W. Whitney Founder, Chairman, President, Itronics Inc. (OTCBB: ITRO; Frankfurt and Berlin:ITG) Recycling Used Photographic Liquids to Pure Silver and GOLD’n GRO liquid Fertilizers April 18, 2008 Presented at the Itronics Meeting Reno-Sparks Convention Center Reno, Nevada

Safe Harbor Statement "Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: This presentation contains or may contain forward-looking statements such as statements regarding the Company's growth and profitability, growth strategy, liquidity and access to public markets, operating expense reduction, and trends in the industry in which the Company operates. The forward- looking statements contained in this presentation are also subject to other risks and uncertainties, including those more fully described in the Company's filings with the Securities and Exchange Commission. The Company assumes no obligation to update these forward-looking statements to reflect actual results, changes in risks, uncertainties or assumptions underlying or affecting such statements, or for prospective events that may have a retroactive effect.

Itronics - A Creative Environmental Technology Company Investing in Itronics supports leading edge environmental technology development and commercialization that profitably: -eliminates liquid photographic waste -separates silver and gold from nutrient metals and minerals -improves agriculture and horticulture -maximizes the use of natural resources -produces a cleaner and greener environment

Itronics - Creative Environmental Technology Demetallizaiton of liquid photochemicals Silver Refining Technology 12 commercial GOLD’n GRO liquid fertilizers, 1 more under development. 1 biopesticide, GOLD’n GRO Guardian Deer Repellent, two more being prepared for registration. Iron, zinc, and sulfur leaching technology, under development. -Recover nutrient metals and minerals from IMI silver concentrates -Potential application for steel mill flue dusts - a huge potential market. -Potential for use to recycle silver-zinc batteries- an emerging potential market -Potential applications in mining Expand silver recovery and refining technology to manufacture Potassium Thiosulfate, a high value bulk fertilizer. Currently expanding fertilizer manufacturing and silver refining capacity. Will start manufacturing GOLD’n GRO Guardian Deer Repellent in May 2008.

Itronics’ Intellectual Property Intellectual Property Entry Barriers EPA, State, County, and City hazardous waste permits required 19 years R & D and cumulative expenditure of $30 million to create proprietary technology 10 years to create a fully commercial fertilizer - 5 years to perfect product. - 5 years to commercialize years of evaluation before obtaining clearance to use on food crops. - Each fertilizer must be registered in each state where it is sold. Liquid fertilizer distribution is specialized and requires long lead time to establish

Itronics - Award Winning Creative Environmental Technology John Whitney was selected as Nevada’s Inventor of the Year One of five finalists for the 2001 Kirkpatrick Chemical Engineering Award Awarded second place (IChemE), Worldwide Environmental Awards in London, England Awarded USA Gold at the International Green Apple Environmental Awards in London, England GOLD'n GRO® was named one of the top 10 new technologies representing the best of agricultural innovation by the Canadian Association of Agri-Retailers Itronics named International Green Hero by the Green Organization, London, England 2007-Dr. John Whitney named “Entrepreneur of the Year,” Agriculture/Environment by The Business Report of Northern Nevada, published by the Reno Gazette-Journal

Itronics - Converts Photowaste to Pure Silver and GOLD’n GRO® fertilizers Operates photochemical recycling and GOLD’n GRO liquid fertilizer manufacturing facility in Reno, Nevada - Only fully permitted facility of this type in the United States, and the world In early stages of long term expansion guided by an eight part growth plan that is updated annually Current Market Cap - $5 million

Itronics GOLD’n GRO Fertilizer Divison Sales are Expanding Sales up 25% for full year 2007 at $2.3 million. Positive gross profit for full year 2007 increased 65%. Expect sales to increase in 2008 to about $4 million. Targeting a 35% gross margin with increase to 60% when GOLD’n GRO Guardian sales established. GOLD’n GRO Guardian, the deer repellant registered in 2008.

Reno Facility Capacity 35,000 square foot structure on 3.5 acres 7,500 ton annual current fertilizer capacity Capable of producing 36,000 tons of fertilizer Commenced operations in January 2000

Itronics’ Business Model Vertical integration generates three basic revenue streams: Paid to transport and process photowaste $$$$$$$$$$ Recover, refine, and sell the silver on the open market $$$$$$$$$$ Manufacture and sell GOLD’n GRO® fertilizers and Guardian –Base liquid$$$$ –Chelated Micro-nutrients$$$$ –Chelated Multi-nutrients$$$$ –Developing GOLD’n GRO® Guardian, a deer repellent fertilizer -future $$$$$

Itronics’ Markets Itronics Metallurgical, Inc Photochemical Processing Photo-by-product Fertilizer Manufacturing Silver Recovery and Refining Current Applications: Cotton Fruit and Nut Trees Grapes Vegetables Silver Sales Photography X-Ray Graphic Arts Motion Picture Micro Reproduction Miscellaneous Future Applications: Alfalfa Soybeans Corn (silage) Corn (grain) Nurseries Ornamental plants Timber seedlings

Itronics - Participating in the Digital Technology Revolution Image capture technology is changed –Digital capture now partially replaces film capture Kodak is no longer the dominant U.S. camera company Hewlett Packard, Sony, Motorola, Nokia, Cannon, Google, Yahoo, Shutterfly, and others have entered the industry Consumer use of returnable 35 mm cameras continues to grow - 5% growth in 2007 Image print technology is changing –Inkjet printing is being marketed to replace silver halide prints Consumers are taking more pictures and buying more silver halide prints using returnable, conventional, and digital cameras Silver halide photo prints are cheaper, better quality, and more permanent than inkjet photoprints; consumers continue to buy price and quality - 6% growth in 2007

Itronics’ Recycling Technology Advantages Achieves complete resource use!! Only fully permitted photo waste to silver and fertilizer facility in the United States!!! Removes 100% of silver and converts residuals to usable products. Environmentally compatible GOLD’n GRO fertilizer manufactured from liquid portion. Silver extracted from solid portion. Solid residual can be converted to non-toxic tile products.

The Markets -- Photowaste Services, Silver, and Fertilizer The U.S. Environmental Protection Agency says silver bearing photoliquids were a 100 million gallon toxic waste stream in the U.S.; today 50 million. Management of silver bearing waste streams required under U.S. EPA RCRA because EPA data shows silver in water is toxic to fish. Regulatory authorities are encouraging development of recycling technologies that increase the amount of materials used beneficially.

Itronics Recycling Services Sales Model Selling photowaste management services –Retail services to all categories of small and large photo facilities in northern Nevada and California Selling Photochemical Waste Water Treatment Units and sludge processing service to large military, medical, and consumer photo processing facilities throughout the U.S. Wholesale photo liquid recycling to medium and large environmental service companies throughout the U.S. Two large service contracts signed in fall Negotiating additional agreements in 2008.

Beneficial Use Photochemical Recycling Photo-Imaging Processor Solution Pick-up and Delivery Services Recycling, Inc. X Treatment Plant Benefits: Improved Biosolids Compliance with NPDES Limits Rivers Itronics GOLD’n GRO ® Fertilizer Silver X Recycling, Inc. Photo/Medical/Industrial Waste 80% volume reduction Licensed Processing Facility

IMI’s Production Facility We pick-up photo chemicals and distribute liquid fertilizer.

Impure Silver Initial separation of silver from impurities Silver “button” with gold Glass for decorative tile!

.999 Silver Pouring molten silver into molds Loaves of.999+ silver Hot work

Silver Nevada Miner 5 Troy Oz. Pure Silver Bar Oz. Silver Nevada Miner Bars

IMI Wastewater Treatment Units IMIWWTU-30-SS SHIPBOARD IMIWWTU-1000-L LAND BASED

The Markets --Photowaste Services Silver and Fertilizer Using Itronics’ technology, 50 million gallons of waste photoliquids are sufficient to manufacture 100 million gallons of GOLD’n GRO fertilizers, or 500,000 tons 50 million gallons of photowaste contains about 10 million ounces of silver; today worth about $170 million Itronics estimates the market targeted for its services and products is approximately $1 billion in the U.S. The total fertilizer market in the U.S. is 50 million tons, a market of approximately $18 billion

Itronics’ GOLD’n GRO® Fertilizer Advantages GOLD’n GRO is priced to compete with existing fertilizers making it cost effective for the farmer GOLD’n GRO is 1.5 to 3 times more effective than other products –More economical for farmer because less fertilizer is needed Crop production is increased by up to 40% Environmentally friendly - reduced fertilizer requirement decreases - surface run-off - soil accumulation - risk of groundwater pollution

The Key is Stronger Root Growth

Field Test on Sweet Corn

Field Tests on Peppers

Oranges

One Happy Customer Dayton Valley Golf Club needed to “kick-start” its greens and tees out of winter dormancy. Three days after applying GOLD’n GRO® formulation with Iron and chelates.

Distribution of GOLD’n GRO® Chelated Liquid Fertilizers Developing GOLD’n GRO as a national fertilizer brand The GOLD’n GRO product line has a total of 12 fertilizers Fertilizers sold bulk wholesale through distributors 1 Biopesticide - GOLD’n GRO Guardian liquid deer repellant fertilizer- (in for registration) Sell to Landscapers/Nurseries Consumer Fertilizers Available through the Itronics web site

Itronics GOLD’n GRO fertilizer Sales Model Focus is on Bulk 5,000 Gallon Tank Truck Sales. -Also sell 250 gallon totes, 55 gallon drums and 2.5 gallon bottles Multi-year licensing, manufacturing, and distribution agreement with Western Farm Services for 5 western states, - more than 100 agriculture retail stores Western Farm Services is a wholly-owned subsidiary of Agrium, Inc. - the largest agricultural fertilizer retailer in the United States, - more than 800 agriculture retail stores nation wide. GOLD’n GRO Guardian will be sold through distributors in the landscape maintenance market throughout the United States.

GOLD’n GRO  Fertilizers

Water Powered GOLD’n GRO  Fertilizer Injectors Chemilizer CP33

GOLD’n GRO Guardian Deer Repellent Fertilizer Deer repellent fertilizer for use on landscapes, non-food crops, and non-bearing trees Existing deer repellents are topical - treatments last 2-3 weeks and wash off with rain. GOLD’n GRO Guardian is systemic, doesn’t wash off, treatments last up to 3 months. The total deer repellent fertilizer market in the U.S. growing rapidly and is expected to exceed $200 million for Itronics.

The Markets --GOLD’n GRO Guardian Deer Repellent Fertilizer Deer damage in the U.S. today exceeds $5 billion, creating a new and growing market. Deer population has grown from 500,000 nationwide in early 1900’s to more than 15 million today. Itronics estimates the market targeted for deer repellent services and products is approximately $1 billion in the U.S. Target markets include urban Landscape Maintenance, Nurseries, and non-food crops.

GOLD’n GRO ® Guardian Results

GOLD’n GRO Guardian Deer Repellent Fertilizer - Registration Sequence Valuable Intellectual Property GOLD’n GRO Guardian Deer Repellent - completed in 2008 Denatonium Benzoate, the repelling ingredient registraton - started in Get 10 year use right, similar to a patent. -Complete in 2 to 3 years. GOLD’n GRO Guardian Deer Repellent Fertilizer - started in 2007 –To be completed after Denatonium Benzoate Registraton is complete. On-going registration costs to be expensed as R & D.

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