7 replies to this topic

[netzky]

what are the standard size of contaminants used for validation of xray in food?

TIA.

[mahantesh.micro]

Hi Netzky

What are detection limit of your x-ray machine for Stone, glass and metal??

[AudreyB]

You will need to define what you would like to find - ie ferrous metal, non-ferrous metal, glass, ceramic, plastic, etc. X-Rays are not metal detectors - they can detect many type of contaminants in food if they have been correctly calibrated and programmed to find the contaminants you are looking for. 

 

You also need to keep in mind what are the regulatory requirements for foreign materials in your country when developing your X-Ray detection program. 

 

I would begin with metals: 2mm, 2.5mm, 4mm of ferrous, non-ferrous and stainless steel. 

 

Do not forget to include your X-Ray into your HACCP plan. You should have a CCP control here and monitor for these contaminants regularly to ensure your machine is functioning correctly. 

[Charles.C]

what are the standard size of contaminants used for validation of xray in food?

TIA.

 

I suggest you initially have a look at this interesting discussion of calculating  X-ray detection limits by an expert -

 

https://www.ifsqn.co...ine/#entry74403

 

I have compiled a few pics giving some general info in respect to X-ray and MD detection limits to illustrate the range of dimensions involved (note that dates slightly old).

 

Plus a Mettler pdf listing available test sample sizes for MD and X-ray units. The latter detector has samples for Al, SS316, Soda-Lime Glass.

 

 x-ray detection limits,2012.PNG   29.8KB   30 downloads

 metal, x-ray detection limits compared,2011.PNG   119.57KB   21 downloads

 X-ray detectable items based on density,2014.PNG   26.25KB   19 downloads

 More X-ray detectable materials based on density,2014.PNG   103.52KB   12 downloads

 various X-ray-contaminant images2011.PNG   303.53KB   18 downloads

 Mettler Metal, X-Ray detectors - TestSamples.pdf   680.66KB   80 downloads

[netzky]

Hi Netzky

What are detection limit of your x-ray machine for Stone, glass and metal??

We are using Glass Ball 3.0 mm, Ceramic Balla 3.0 mm, Sus wire 0.7 mm and Sus Ball 0.8 mm. This is used for soft baked product

[netzky]

I suggest you initially have a look at this interesting discussion of calculating  X-ray detection limits by an expert -

 

https://www.ifsqn.co...ine/#entry74403

 

I have compiled a few pics giving some general info in respect to X-ray and MD detection limits to illustrate the range of dimensions involved (note that dates slightly old).

 

Plus a Mettler pdf listing available test sample sizes for MD and X-ray units. The latter detector has samples for Al, SS316, Soda-Lime Glass.

 

x-ray detection limits,2012.PNG

metal, x-ray detection limits compared,2011.PNG

X-ray detectable items based on density,2014.PNG

More X-ray detectable materials based on density,2014.PNG

various X-ray-contaminant images2011.PNG

Mettler Metal, X-Ray detectors - TestSamples.pdf

Thanks Sir for the info.

We already purchased some test pieces from Metler Toledo Philippines for our Metal Detector.

[Charles.C]

Thanks Sir for the info.

We already purchased some test pieces from Metler Toledo Philippines for our Metal Detector.

And X-ray also apparently.

[mahantesh.micro]

We are using Glass Ball 3.0 mm, Ceramic Balla 3.0 mm, Sus wire 0.7 mm and Sus Ball 0.8 mm. This is used for soft baked product

 

It always depends on your country regulation and if you are exporting to other countries then you need to refer their regulation, what are the foreign material limit in your products. As per Canadian regulation max is 2.0 mm  and as per USFDA it is 7 mm except for infant food.

 

And when you validate you should do it for all pack sizes, all types of food products etc.