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Residence Time (Holding Time) Testing and Verification

Residence Time (Holding Time) Testing and Verification

Saline conductivity method using Lumenite Control Technology MTC-3000 pasteurization testing systemTo ensure all harmful micro-organisms are killed, pasteurisation involves heating the product to international standards before it is cooled again. A combination of time and temperature is used to ensure that the taste, appearance and nutritional value of the product are not altered.

The holding time should be established as a “Critical Control Point” in any maintenance and preventative maintenance system.  Without the monitoring and measuring of this critical aspect of the pasteurisation process, the likelihood of product safety hazards could occur with the possibility of damage to your brand image which can be caused by negative media attention.

Independent Integrity Inspection Limited (INDEi) provides the expertise and the solution to certify the holding time process / verification to the standards accepted by food safety directives and standards, using equipment manufactured by the world’s leader in design and manufacture of holding time testing equipment.

INDEi offers the holding time analysis system as part of the overall periodic maintenance system for plate and tubular pasteurisers and heat exchangers or as a stand-alone test complying with legislation with a reliable, hygienic, accurate and traceability measuring solution.

Using the saline conductivity method and equipment provided by Lumenite Control Technology, the Company is enabled to reproduce the results time and time again, year after year as long as the critical components have not been changed ie pump, length of holding tube.



Saline conductivity method using Lumenite Control Technology MTC-3000 pasteurization testing system




Whether you need to meet ISO 9001, BRC, IFS, ISO 22000 or other industry requirements, INDEi delivers. 

From pasteuriser and heat exchanger testing to flow rate confirmation and tank inspection to spray dryer inspection, process plant validation and preventative maintenance INDEi ensures compliance.