The QualityGrader by Flikweert Vision is an advanced optical sorting machine designed specifically for potatoes and onions. Combining high-performance industrial cameras with intelligent AI technology, the QualityGrader automatically detects, evaluates, and removes defective products with consistent accuracy.
Designed around real-world requirements from growers and processors, the QualityGrader provides a highly automated, reliable, and scalable solution for modern sorting lines. With two available machine widths, capacity of up to 30 tonnes per hour, and an optional additional ejection unit, the system can create multiple product streams to meet different quality requirements.
How the QualityGrader Works
- Detect: See Every Product from Multiple Angles Industrial RGB cameras capture each potato or onion multiple times from different viewing angles. Depending on the machine configuration, the system uses 6 or 9 cameras to provide detailed visual information for accurate inspection.
- Assess: AI-Powered Quality Evaluation Advanced AI models evaluate every individual product objectively and accurately. Based on user-defined tolerances, the system automatically determines whether each product meets the required quality standard or should be rejected. The AI models are continuously improved using real-world operational data.
- Primary Sorting: Accurate Removal of Defects Products identified as unacceptable are precisely removed from the main product flow. This creates a reliable separation between good-quality produce and defective or unwanted products while reducing dependence on manual inspection.
- Secondary Sorting: Create an Additional Product Stream For applications requiring greater separation, an optional second ejection unit can be added. This allows the system to separate good product, lower-quality product, and foreign objects into different streams.
- RejectSeparator: Separate Stones and Clods The optional RejectSeparator can further process the rejected stream by separating stones and clods. This creates an additional product stream and can be flexibly used with multiple QualityGraders.
What Can the QualityGrader Detect?
Potatoes
The QualityGrader can identify a wide range of potato defects and unwanted materials, including:
- Wireworm damage
- Common scab
- Damage
- Shape defects
- Growth cracks
- Green potatoes
- Stones and clods
- Rhizoctonia
- Aging Rot
This broad defect-detection capability allows processors and growers to establish consistent quality standards while automating a significant part of the inspection and sorting process.
Why Choose the QualityGrader?
Compact Design
The QualityGrader is designed to be highly compact and can be integrated into almost any existing sorting line without major modifications.
- Dimensions: Length: 340 cm
- Width: 157 cm
- Height: 234 cm
Fully Specialized for Potatoes
Unlike generic optical sorting systems, the QualityGrader has been developed specifically for potatoes and onions, allowing the technology to address the practical requirements of growers and processors.
Intelligent AI-Based Sorting
The AI models are supported by practical data gathered from more than 450 sorting machines worldwide, helping deliver consistent and precise sorting performance.
Simple and Intuitive Operation
The operator interface provides control over the complete sorting process. Individual defect tolerances can be adjusted easily through a clear, practical operating system, allowing the machine to be adapted to specific quality requirements.
Proven Performance
With hundreds of QualityGraders and Dividers operating around the world, Flikweert Vision states that its machines have demonstrated reliability and stable performance in sorting operations.
Reduce Dependence on Manual Sorting
By automating a large part of the quality inspection and sorting process, the QualityGrader can significantly reduce the amount of manual labour required for quality sorting.
Developed from Real Agricultural Experience
The machine has been developed by a team with agricultural roots, with the technology focused on practical requirements in real sorting environments.
In-House Technology and Development
Flikweert Vision manages the development, production, and software of its machines in-house. According to the manufacturer, this integrated approach provides greater control over quality, ongoing development, and technical support.
Transform Your Sorting Process
The QualityGrader brings together AI, industrial camera technology, automated rejection, and practical sorting expertise in one compact system. Whether the objective is to improve product quality, automate inspection, reduce manual sorting requirements, or create multiple quality streams, the QualityGrader provides a scalable platform specifically developed for potatoes and onions.











