Product inspection is the last gate before a contaminated or underweight pack reaches a customer — and it is four technologies, not one: metal detection, checkweighing, X-ray and vision. The manufacturers below are scored on how well each solves the contamination and fill-accuracy problem your product actually has.
This 2026 edition profiles the top global manufacturers. Note: This is an independent editorial ranking scored on four dimensions — technical capability, market coverage, equipment reliability and data verifiability. No sponsored placements are included. Every specification below is cited from a published source; where a builder does not publish a figure, it is marked "Not published" rather than estimated.
The core idea of this page: choose the inspection manufacturer by the contaminant and the pack you actually run — metal detection, checkweighing, X-ray and vision catch different things — then force every shortlisted builder to prove the detection sensitivity and false-reject rate on your product at line speed. The ranking is the shortlist; the validated test is the decision.
The ten at a glance
| Rank | Manufacturer | Machine class | Headquarters |
|---|---|---|---|
| 1 | Mettler-Toledo (Safeline/Garvens/Hi-Speed) | Metal detection, checkweighing, X-ray, vision | Switzerland / UK |
| 2 | Thermo Fisher Scientific | Metal detection, checkweighing, X-ray | United States |
| 3 | Ishida | Checkweighing, X-ray, metal detection | Japan |
| 4 | Loma Systems (ITW) | Metal detection, checkweighing, X-ray | United Kingdom |
| 5 | Anritsu Infivis | Metal detection, checkweighing, X-ray | Japan |
| 6 | Bizerba | Checkweighing, metal detection, X-ray, vision | Germany |
| 7 | Wipotec-OCS | Checkweighing, X-ray | Germany |
| 8 | Sesotec | Metal detection, X-ray | Germany |
| 9 | Fortress Technology | Metal detection | Canada |
| 10 | Minebea Intec | Checkweighing, metal detection, X-ray, vision | Germany |
How we ranked them
Each manufacturer is scored on four dimensions using published specifications and verifiable company information only. Where a builder does not publish a figure, it is marked "Not published" rather than estimated.
| Manufacturer | Technical capability | Market coverage | Equipment reliability | Data verifiability |
|---|---|---|---|---|
| Mettler-Toledo | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★★ |
| Thermo Fisher | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
| Ishida | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★★ |
| Loma Systems | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ |
| Anritsu Infivis | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ |
| Bizerba | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★★ |
| Wipotec-OCS | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ |
| Sesotec | ★★★★☆ | ★★★★☆ | ★★★★★ | ★★★★☆ |
| Fortress Technology | ★★★★☆ | ★★★☆☆ | ★★★★★ | ★★★★☆ |
| Minebea Intec | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ |
1. Mettler-Toledo Product Inspection (Switzerland / UK)
Headquarters: Greifensee, Switzerland (Safeline Global Centre of Excellence, Royston, UK) — Founded: 1945 (Safeline brand 1989).
Mettler-Toledo's Product Inspection division spans Safeline metal detection, Garvens and Hi-Speed checkweighing, X-ray and vision under one roof.
- Core technology: metal detection, checkweighing, X-ray and vision inspection.
- Flagship models: Tablex-PRO metal detector (below 0.3 mm), Hi-Speed C35 checkweigher (600 ppm, ±0.01 g) and Safeline X36 X-ray (0.8/0.4 mm).
- Best for: food and pharma producers needing multi-technology inspection from one supplier.
Sources
Title: Safeline Tablex-PRO — Mettler-Toledo
The Tablex-PRO detects "Contaminants less than 0.3mm in diameter"; the Hi-Speed C35 checkweigher documents "a throughput of up to 600 packs per minute".
2. Thermo Fisher Scientific (USA)
Headquarters: Waltham, Massachusetts, USA — Founded: 2006 (Thermo Electron 1956, Fisher Scientific 1902).
Thermo Fisher's product inspection portfolio spans Sentinel metal detectors, Versa checkweighers and NextGuard X-ray.
- Core technology: metal detection, checkweighing and X-ray inspection.
- Flagship models: APEX 500 Rx metal detector (0.3 mm) and Versa Rx checkweigher (up to 650 ppm).
- Best for: pharma and food producers needing validated inspection.
Sources
Title: APEX 500 Rx — Thermo Fisher
URL: https://www.news-medical.net/Pharmaceutical-Metal-Detector-APEX-500-Rx
The APEX 500 Rx "Detects metal contaminants as small as 0.3 mm"; the Versa Rx checkweigher is documented at "Up to 650 ppm".
3. Ishida (Japan)
Headquarters: Kyoto, Japan — Founded: 1893.
Ishida pairs its weighing heritage with checkweighing, X-ray and metal detection for fresh-food lines.
- Core technology: checkweighing, X-ray and metal detection.
- Flagship models: DACS-GN checkweigher (up to 480 ppm, ±0.1 g) and IX-G2 X-ray (under 0.6 mm).
- Best for: weigh-fill-inspect integration from one supplier.
Sources
Title: DACS-GN Checkweigher — Ishida
URL: https://www.ishida.com/ww/en/products/inspection/checkweigher/dacs-g.cfm
Ishida documents the DACS-GN checkweigher range, and trade press records it "at higher speeds of up to 480 packs per minute" with MID approval.
4. Loma Systems (UK — ITW)
Headquarters: Farnborough, Hampshire, UK — Founded:1969.
Loma, a division of Illinois Tool Works, builds IQ4 metal detectors, CW3 checkweighers and X5 X-ray systems.
- Core technology: metal detection, checkweighing and X-ray.
- Flagship models: IQ4 metal detector (IP69K) and CW3 checkweigher (115 m/min).
- Best for: food and pharma inspection with a strong UK/European base.
Sources
Title: Our History — Loma Systems
URL: https://www.loma.com/en/about-us/our-history
Loma traces its metal detection business to 1969 and documents the CW3 checkweigher at 115 m/min with OIML R51 + MID approval.
5. Anritsu Infivis (Japan)
Headquarters: Atsugi, Kanagawa, Japan — Founded: parent 1895 (Infivis entity 1967).
Anritsu Infivis builds high-sensitivity metal detectors, checkweighers and X-ray systems with dual-frequency technology.
- Core technology: metal detection, checkweighing and X-ray.
- Flagship models: M6-h metal detector (Fe 0.25 mm / SUS 0.6 mm) and AW9 checkweigher (1,000 ppm, ±0.006 g).
- Best for: high-accuracy checkweighing and sensitive metal detection.
Sources
Title: M6-h Metal Detector — Anritsu
URL: https://www.anritsu.com/en-gb/product-inspection/products/metal-detection/high-sensitivity
Anritsu documents the M6-h at "Fe sphere 0.25 mm dia. / SUS sphere 0.6 mm dia." and the AW9 checkweigher at "1,000 products per minute".
6. Bizerba (Germany)
Headquarters: Balingen, Germany — Founded: 1866.
Bizerba builds checkweighers, metal detectors, X-ray and vision systems for food retail and industry.
- Core technology: checkweighing, metal detection, X-ray and vision.
- Flagship models: CWEmaxx checkweigher (up to 600 ppm) and XRE-D X-ray (up to 400 products/min).
- Best for: food producers needing certified weighing and inspection.
Sources
Title: CWEmaxx Checkweigher — Bizerba
URL: https://www.bizerba.com/int/en/products/cwe_maxx
Bizerba documents the CWEmaxx at "weighing up to 600 products per minute", and its history begins in 1866.
7. Wipotec-OCS (Germany)
Headquarters: Kaiserslautern, Germany — Founded: 1988.
Wipotec-OCS builds dynamic checkweighers and X-ray systems, with the HC-A as its flagship checkweigher.
- Core technology: checkweighing and X-ray inspection.
- Flagship models: HC-A checkweigher (up to 650 pc/min) and SC-series X-ray (0.4 mm resolution).
- Best for: high-speed dynamic weighing and X-ray.
Sources
Title: Checkweighers — Wipotec
URL: https://www.wipotec.com/en/checkweighers
Wipotec documents the HC-A as its flagship with "Output calibrated for up to 650 pc/min".
8. Sesotec (Germany)
Headquarters: Schönberg, Lower Bavaria, Germany — Founded: 1976.
Sesotec builds INTUITY metal detectors and RAYCON X-ray systems for food and pharma.
- Core technology: metal detection and X-ray inspection.
- Flagship models: INTUITY metal detector (Ø0.79 mm V2A) and RAYCON D+ X-ray (Ø0.3 mm).
- Best for: contaminant detection in food and packaging.
Sources
Title: Metal Detector Family — Sesotec
URL: https://www.separation-sorting-tec.com/resources/Brochure---Metal-detector-family.pdf
Sesotec documents the INTUITY at "Detection accuracy from Ø 0.79 mm V2A", and states it was "Founded in 1976".
9. Fortress Technology (Canada)
Headquarters: Toronto, Ontario, Canada — Founded: 1996.
Fortress Technology builds metal detectors, with the Phantom and Interceptor ranges targeting food safety.
- Core technology: metal detection.
- Flagship models: Phantom (0.8 mm ferrous / 1.2 mm stainless) and Interceptor (+100% stainless detection).
- Best for: robust, wash-down metal detection for food.
Sources
Title: Phantom Metal Detector — Fortress
Fortress documents the Phantom at "0.8 mm ferrous, 0.8 mm non-ferrous and 1.2 mm stainless steel", and states it was founded in 1996.
10. Minebea Intec (Germany)
Headquarters: Hamburg, Germany — Founded: parent 1951 (Intec entity 2014).
Minebea Intec (formerly Sartorius Intec) builds checkweighers, metal detectors, X-ray and vision systems.
- Core technology: checkweighing, metal detection, X-ray and vision.
- Flagship models: Flexus checkweigher (up to 600 pc/min) and Dymond X-ray (0.4–0.8 mm).
- Best for: pharma and food weighing plus inspection.
Sources
Title: Flexus Checkweigher — Minebea Intec
Minebea Intec documents the Flexus at "Standard throughput 0~600(pcs/min)".
What these machines cost
Inspection equipment spans a wide band — a basic metal detector or checkweigher sits in the low-to-mid five figures, while a high-sensitivity X-ray system with multi-lane rejection climbs well into six figures. Vendors do not publish price lists, so treat these as order-of-magnitude bands and always quote the aperture/weighing range, reject mechanism, validation (IQ/OQ/PQ) and service contract in the same scope.
5 questions to ask before you buy
- What detection sensitivity do you guarantee on my product, and at what false-reject rate? Sensitivity is meaningless without the false-reject figure; ask for both on your exact product.
- Can you run my product through a validated test and show me the detection and rejection data? A witnessed, challenged test (ferrous, non-ferrous, stainless spheres) on your product is the only proof that matters.
- Which standard does the system meet (IP rating, ATEX, 3-A, EHEDG)? Match the enclosure and hygiene rating to your wash-down environment — not just a "sanitary" claim.
- Is the checkweigher MID/OIML approved for legal metrology where I sell? Weight-regulated fills may require legal-for-trade approval; confirm before you buy.
- What is the validation documentation (IQ/OQ/PQ) and who writes it? For regulated lines, the validation package is part of the machine, not an afterthought.
Last verified: September 9, 2026.
