Sparc Systems
Minebea Intec
Fortress Technology
Yamato Scale


Inspection Machines are a series of machines including manual, mechanical and computerised electronic systems which inspect products, packages or packaging components to ensure they conform to specification. For example colour, size, mass, the presence of foreign bodies in a product or package, pack integrity, missing labels or items, or incorrect data; any items which fall outside the pre-set values are rejected.

The most common forms of inspection machines are colour sorters, checkweighers and metal detectors but the range of inspection equipment available has grown hugely in recent years driven by the need to automate production and to remove the people from the line who as well as carrying out manual tasks also inspected products and packs visually.

Advances in technology have also increased the range of inspection tasks which can be performed. For instance while conventional metal detectors were limited to detecting ferrous metal, using different technologies it is now possible to detect bone, glass, wood, fibres and most non-ferrous metals in products as well.

Verification of the weight of a filled package using a checkweigher is an important legal metrology process but in addition the checkweigher may be an integral part of a labelling or product filling system. (See also Labelling and Form Fill Seal pages).

Other inspection machines carry out functions such as checking pack integrity for leaks, checking fill levels and even checking the temperature of a product in the pack without destroying the pack.

Inspection machines are used in all end user sectors, including food, beverage, pharmaceutical, toiletries & cosmetics, and household chemicals. Some kinds of inspection are more common in some sectors than others or even unique to a particular industry (for example missing or broken pill detectors in the pharmaceutical sector).

In the pharmaceutical industry a range of inspection systems have also been developed to check that batch codes are present and legible and to check that every packaging component is correct for the product being packed.

Inspection is also undertaken in many sectors outside the mainstream areas of use, for example, the garment industry is a major user of detection equipment for pre-packed items such as shirts.

Common Terminology

  • Load Cell
  • Reject Mechanism
  • Weigh Cell
  • X-Ray
  • Vision system
  • OCR
  • Cap Torque
  • Colour Sorters
  • Inspection Systems
  • Checkweighers
  • Metal Detection