Holding time testing

Residence Time (Holding Time) Testing and Verification


To ensure all harmful micro-organisms are killed, pasteurisation involves heating the product to recognised international standards before it is cooled again. A combination of time and temperature is used to ensure that the product’s taste, appearance, and nutritional value 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 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.

Residence Time Testing

Not sure which testing method would be better for you?

We provide the expertise and the solution to certify the holding time process/verification to the standards accepted by food safety directives, standards and supermarkets, using equipment designed and manufactured for holding time testing.

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 reliable legislation hygienic, accurate and traceability measuring solution.

Residence Time Testing and Verification

Independent Integrity Inspections

Providing reliable testing and inspection services.

Saline Conductivity Testing Method

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

The saline conductivity testing method is the traditional international recognised method where a saline solution is injected at the holding tube’s starting point and is detected by a conductivity probe. When the solution has reached the other conductivity probe, the time is calculated.

Thermal Check Testing Method

The thermal check method is a non-intrusive test and can be carried out during production. Thermocouples are placed at the beginning and the end of the holding tubes/section, a heat rise is applied to the processing plant, which is detected by the Thermal Laptop, and the time is calculated.

We support you in determining the best solution for cost-efficiently maintaining production, quality and regulatory requirements.
We are the one source for all of the inspection methods needed to meet your specific requirements for accurate and reliable results.

The driving force at the core of our INDEi values is that customers must come first.

All employees understand that it is possible to ensure that inquiries are dealt with promptly through dedication and determination. Anyone looking for an answer to a technical question receives an immediate response.

We believe that our services should be carried out professionally, accurately and delivering the optimal solution to our customers testing and process monitoring requirements.
We are committed to maintaining our position as a leading company within our field. We, therefore, continuously research and invest in our testing activities.
Consequently, for INDEi, innovation is not just a catchphrase – it is a matter of course, to secure our business's future success.

Since the creation of the company INDEi has worked tirelessly to provide a global platform for the provision of inspection services.

The company presently operates over several continents including Europe, Asia and North America and the hope that this will continue to expand in years to come.

We believe that by adhering to the company's key values and working hard, we can ensure that the future of INDEi is a bright one. We will be fostering new global partnerships to expand our technical services into new countries and industrial sectors.
We will be working to develop and release new services to add to our range. Above all, we will be working tirelessly to ensure that our customer’s experiences of working with INDEi are positive and fruitful so that they return to us time and time again.
Swindon MaP
Contact INDEI Today!
If you have a requirement for non-destructive testing and/or integrity inspection services, please consult us today.
Open 9am to 6pm, Monday to Friday
13 Oaktree Business Centre, Swindon, UK
Contact us at problem.solved@indei.co.uk
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