• Product testing must be completed to ensure compliance with Tesco Product Specifications for microbiological, chemical, physical, organoleptic and other specific requirements (e.g. Free from and nutritional claims) unless the site has written confirmation from the Tesco TM.

  • A sampling plan must be in place and followed, to ensure requirements are met.


  • Testing must be conducted in accredited laboratories

  • All tests performed by the laboratory must be accredited by their in country national accreditation body

  • Accreditation must be by an internationally recognised country body

  • The scope of accreditation must cover all tests undertaken

  • Laboratories must participate in proficiency / correlation testing

  • Routine QC checks which are completed in a laboratory environment such as measuring dimensions of the product, quality sampling etc. do not need laboratory accreditation


  • As of Jan 2011, all finished product testing for salmonella, listeria, e.coli O157 and campylobacter must be carried out at a laboratory that is approved by the Tesco laboratory approval scheme

  • The manufacturer must be able to demonstrate that the methods used for their product testing are included in the scope of the laboratory approval


  • On site laboratories which conduct pathogen testing must have controls in place to prevent cross contamination from the lab to the production facility


  • Procedures must be in place detailing samples, sampling methods, type of tests to be conducted, durability information etc


  • Procedures must be in place to cover reporting of routine results and out of specification results

  • Out of specification pathogen results must be reported back to the Tesco TM at earliest opportunity


  • Action and investigation must be evident where results fail to meet specified limits


  • Ongoing trend monitoring system must be in place


  • Coats worn in on site microbiological laboratories (or checmical laboratories where toxic chemicals are used) must not be worn in any factory area (including offices) and must be distinguished from normal factory protective clothing. (Ideally a different colour).

  • These garments are laundered separately to factory protective clothing.

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