Why do we buy one brand of canned food over another?

One of the reasons some foodstuff brands are so successful is their taste, making their recipes closely guarded company secrets. A lot of effort goes into developing a winning recipe and making sure that that same flavor safely makes it to our tables is what the food packaging industry is all about. The lowly tin can has been with us since 1812, but it has evolved from simple tinplated steel to now including a zirconium passivation film applied over the tinplate to further protect the food from spoiling and in preserving its flavor. Today's aluminum cans also employ a protective Zr film.

Measurement of food can's zirconium film coating thickness is critical

Measurement of the can's zirconium film coating thickness is a critical part of the food industry's quality control effort to ensure their products are safe and taste great. XRF used for coating analysis is an emerging technique which is being proven superior to past and present test methods and the Rigaku Mini-Z Zr Analyzer is in the forefront addressing that need. With easy loading of sample and completely non-destructive analysis, the Mini Z Zr Analyzer is proving all other methods antiquated.

Example: Zr coating on Al substrate

Zr coating on Al substrate

Calibration curve for thickness of Zr-containing chemical coating.

Measuring time: 100 sec.
Measured part: bottom of can

A series of compact benchtop wavelength dispersive XRF analyzers, the Mini-Z series of analyzers are designed for analyzing specific single elements. Since the optics are optimally configured to a particular element, this series allows for high precision and low detection limits. Mini-Z can be configured as a Si analyzer (e.g., for coated Si on paper or plastic), an Al analyzer (e.g., for coated Al on paper or plastic), a Ni analyzer, (e.g., for Ni coating or plating), a Cl analyzer, a P analyzer (e.g., biofuels) or a Zr analyzer (e.g., for Zr coating). Read more...

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