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Global concern for safer food is driving the demand for food-safety audits across the industry. Increasingly, processors are looking for simple and effective solutions to meet new HACCP requirements. These concerns combined with consumer and regulatory demands to use fewer chemicals, have increased the need for proven, environmentally friendly, ozone-based solutions for the disinfection of fresh produce. Purfresh Clean provides packers and processors with a cost effective solution to enhance food safety and automated HACCP reporting, while reducing or eliminating the use of chemicals.
Purfresh Wash efficiently dissolves ozone into water at precise concentrations for use as a safe but powerful spray bar disinfectant rinse. The solution kills pathogens and controls a broad spectrum of foodborne and waterborne microorganisms. Ozone is nature’s most powerful disinfectant and works 3,000 times faster than chlorine. By incorporating ozone into the rinse process, growers and processors can control Oxidation Reduction Potential (ORP) levels, enhance food-safety practices, and reduce the use of chemicals.

Most leading companies and food-safety standards across the globe include an HACCP process as one of the most critical steps in modern food safety. Principle four of HACCP’s seven principles is to “Establish a system to monitor control of the CCP.” Purfresh Wash provides automated HACCP control and reporting with Purfresh’s Intellipur informatics monitoring and reporting. Intellipur is constantly monitoring critical control parameters of your Purfresh Wash system, and responds automatically to process changes. It will immediately shut down and alarm if unexpected conditions arise. Detailed reports are available online for stakeholders and regulatory bodies, providing the documented evidence necessary for proper HACCP control.

Purfresh Wash generates ozone from ambient air on-site, ending chemical purchase, storage, and disposal issues. After oxidizing its target, ozone conveniently converts into pure oxygen, leaving product taste, texture, and smell characteristics in their natural state. The Purfresh Wash spray bar solution works with existing equipment and processes, and it’s easy to install, operate, and maintain. Ozone is certified organic, allowing processors to run both conventional and organic product on a single line.
Purfresh Wash was developed scientifically, ensuring that only precise amounts of ozone are delivered to the product and work area for both effectiveness and safety. Purfresh Wash’s unique closed-loop concentration control, with its measurement sensors and on-board PLC, responds immediately to process changes without any need for human intervention. In addition, the solution includes fail-safe ambient air sensors, which constantly ensure that work areas maintain ozone concentrations well within OSHA standards.

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Enhance food-safety
- Disinfect process water
- Control cross-contamination
Meet HACCP requirements
- Web-based monitoring and reporting
USDA and FDA approved, certified organic
Ideal for:
- Bananas
- Cherries
- Citrus
- Cucumbers
- Peppers
- Pome Fruit
- Potatoes
- Tomatoes
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CHLORINE |
OZONE |
Control of Cross- Contamination |
Lower oxidizing power requires long exposure times. |
Higher oxidizing power allows shorter exposure times. |
Resistance Issues |
An ongoing problem |
None |
Residue on Produce |
May adhere to surface or be absorbed into cut ends of product. |
Ozone reverts to pure oxygen, leaving no residue. |
Sensory Aspects of Produce |
Salts may burn treated product. Absorption may affect taste and appearance. |
Ozone maintains fruit taste, texture, and smell characteristics. |
Work Environment |
Strong/irritating odors can permeate the work space. |
Proper system design mitigates any odors. |
Regulatory Overhead |
Increased water discharge costs and scrutiny. |
None |
Corrosiveness |
Can corrode equipment. |
No issue with a properly designed solution. |


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Model 4700 |
Model 4701 |
Flow rate |
1-20 GPM |
21-48 GPM |
Spray bed area |
< 15 sq. ft. |
> 15 sq. ft. |
City Washer Inlet Pressure |
35 PSI max. |
35 PSI max. |
O3 Generation |
Ozone Generator |
OG4950 |
OG4950/OG4905 |
Included ozone generator output |
2.0 ppd @ 6% |
4.0 ppd @ 6% |
Contacting and Distribution |
Process line size |
1.5" |
2" |
Venturi/static mixer |
1.5" |
2" |
Pump |
50 gpm/3 HP |
50 gpm/3 HP |
Contacting tank |
50 gallons |
50 gallons |
Monitoring, Control, and Safety |
Controller |
PLC, touch screen HMI |
Process sensors |
DO3 and ORP |
Safety sensors |
Ambient O3 |
Intellipur basic informatics |
Web-based reporting portal, remote diagnostics and troubleshooting, local supervisory control |
Optional Components |
Control lights, unified skid, additional ambient O3 sensors |
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