---
lang: en
title: "Foreign object and contamination detection in bulk product"
url: https://nabrio.com/use-cases/foreign-object-detection
canonical: https://nabrio.com/use-cases/foreign-object-detection
updated: 2026-10-27
publisher: Nabrio Co., Ltd. (nabrio.com)
---

# Foreign object and contamination detection in bulk product

Nara watches a stream of bulk product, such as pellets, powders, food or rubber, and detects contaminants in real time. It alerts operators, holds the batch or triggers a reject, and logs every event with an image, so 100% of the product is inspected instead of samples.

- Sectors: [Manufacturing](https://nabrio.com/industries/manufacturing.md), [More sectors](https://nabrio.com/industries/more-sectors.md)
- What it takes: Trained on your items. We train a model on your own products or defects in Reva, and Nara runs it on the line.
- Products: [Nara](https://nabrio.com/nara.md), [Reva](https://nabrio.com/reva.md)

## The problem

Contaminants in bulk product damage quality and customer trust, and manual sampling cannot cover the whole flow.

## How it works

- **Input:** Camera over the product stream or container
- **Process:** Contamination model trained on your product
- **Action:** Alert operators, hold the batch or reject, and log every event with images

A camera looks at the product on the belt or inside its container. A contamination model, trained in Reva on your product, checks each frame. When it finds a contaminant, Nara alerts operators straight away, can hold the batch or trigger a rejector, and stores the image and event for quality tracking.

## What you need

- A camera over the product stream, with consistent lighting
- A PC or industrial PC running Nara next to the line
- Images of your product and its contaminants to train a model in Reva

## Nara building blocks

- Camera nodes
- Custom contamination model (Reva)
- If / switch
- Operator alerts (tower light, email, Teams, Telegram)
- Image and event log

## What it improves

- Contamination incidents
- Product value protected
- Inspection coverage: 100% instead of sampling

## Where it runs

- [455 tonnes of fertiliser inspected every day](https://nabrio.com/customers/ube-fertiliser-contamination-qc.md) (UBE Group Thailand)
- [Zero-contamination packaging QC for a 5.76 billion THB product line](https://nabrio.com/customers/ube-synthetic-rubber-packaging-qc.md) (UBE Group Thailand)

## Frequently asked questions

### Is this running in production?

Yes. At UBE Group, Nara has inspected 455 tonnes of fertiliser pellets a day since March 2021.

### Does the video leave the plant?

No. Nara runs on your own hardware, and images and results stay on-site.

## Related use cases

- [Visual quality inspection](https://nabrio.com/use-cases/visual-quality-inspection.md)
- [Defect detection and rejection](https://nabrio.com/use-cases/defect-detection-and-rejection.md)
- [Barcode and label inspection](https://nabrio.com/use-cases/barcode-and-label-inspection.md)

Talk to us about foreign object detection: sales@nabrio.com. [Download Nara](https://nabrio.com/download.md).