Product temperature data, digital twin context, and AI turn lyophilization experiments into transferable process knowledge

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From Experiment to Industrially Applicable Process Intelligence

How real product temperature data, physical models and ANN reduce the experimental search space in lyophilization

Pharmaceutical lyophilization generates ever-growing volumes of data. Yet one decisive question often remains unanswered:
Which insight from the current experiment will actually improve the next industrial decision?

The next lyophilization run should confirm a hypothesis - not merely generate another collection of data.

Pharmaceutical lyophilization generates ever-growing volumes of data. Yet one decisive question often remains unanswered:
Which insight from the current experiment will actually improve the next industrial decision?

At laboratory scale, additional experiments can be performed comparatively easily.

During scale-up, technology transfer, engineering runs or PPQ, however, the same experimental approach becomes time-consuming, expensive and risk-intensive.

More data alone does not solve this problem.

Data creates business value only when it:

  • tests a well-founded process hypothesis,
  • can be interpreted through physical principles,
  • remains comparable across runs, equipment, and scales,
  • and makes the next experiment more targeted.

The next lyophilization run should confirm a hypothesis - not merely generate another collection of data.

01 | Product Temperature

Product Temperature Measurement Provides the Foundation

The challenge is to transform robust measurement data systematically into transferable process knowledge.

For two decades, Tempris has supported pharmaceutical companies in measuring the actual product temperature directly inside the vial – from laboratory scale through scale-up and technology transfer to commercial production.

Product temperature data closes an essential gap: equipment parameters describe how the freeze dryer operates. Product temperature shows how the product actually responds under those conditions.

Product temperature data enables companies to:

  • verify product limits,
  • investigate critical vial positions,
  • characterize heat-transfer conditions,
  • develop Kv models,
  • and compare product behavior across different scales.

Experience also shows, however, that the availability of robust measurement data is no longer the only challenge.

The next challenge is to transform that data systematically into transferable process knowledge.

The challenge is to transform robust measurement data systematically into transferable process knowledge.

02 | Data Usability

The Problem Is Not a Lack of Data – The problem is its limited industrial usability

The next economic lever:

Consistently develop documented data into a reusable process model.

Process development often generates more experimental data than can be justified theoretically or transferred to industrial scale.

A single run provides temperature curves, process parameters, endpoint information, and quality values. Initially, these data describe only what occurred under the particular experimental conditions.

They do not automatically explain:

  • which vial groups limit the process,
  • why temperature profiles differ,
  • which heat- and mass-transfer mechanisms are responsible,
  • which differences are caused by the product, position, or equipment,
  • and which insights can be transferred to another scale or another freeze dryer.

The result is a series of isolated experimental outcomes. With every new scale-up, transfer or equipment comparison, part of the interpretation begins again.

Data is documented – but not consistently developed into a reusable process model.

This is precisely where the next economic lever lies.

The next economic lever:

Consistently develop documented data into a reusable process model.

03 | Process Understanding

From the Temperature Curve to Mathematical Process Understanding

Stop treating individual runs only as completed experiments.

Every run extends an existing model of product and process behavior.

A measured product temperature curve is not a complete explanation of the process. It is the product’s real response to heat transfer, pressure, drying progress, product resistance, and equipment conditions.

When this response is linked to physical heat- and mass-transfer models, further relationships can be evaluated:

  • the vial- and position-dependent heat-transfer coefficient Kv,
  • the changing product resistance Rp,
  • the dynamics of primary drying,
  • the influence of critical vial groups,
  • the primary drying endpoint,
  • the relationship to residual-moisture data,
  • and transferability between freeze dryers.

The decisive advance is to stop treating individual runs only as completed experiments. Every run extends an existing model of product and process behavior.

This changes the development logic:

Conventional Experimental Logic Advanced Tempris Logic
Evaluate the data from one run Develop knowledge across multiple runs
Review individual temperature curves Compare complete time series
Assess averages Differentiate critical vial groups
Transfer process parameters Transfer product behavior
Explore broad experimental ranges Verify well-founded hypotheses selectively
Document results Build reusable process knowledge

Stop treating individual runs only as completed experiments.

Every run extends an existing model of product and process behavior.

04 | Digital Twin

The Digital Twin Shows the Location – the Time Series Explains the Development

The Digital Twin provides a spatial visualization and a comparative model of actual product behavior.

The Tempris Digital Twin enables real product temperatures to be linked to their positions inside the freeze dryer. Changing color visualizations show how temperature develops at the instrumented vial positions during the process.

This representation answers an important question: Where does product behavior change?

The image alone, however, does not yet explain the recurring relationships behind that change.

The additional insight emerges when complete temperature time series are compared:

  • between edge and center vials,
  • between hot and cold spots,
  • between shelves,
  • between different runs,
  • between laboratory, pilot and production equipment,
  • and between different process conditions.

The Digital Twin thereby evolves from a spatial visualization into a comparative model of actual product behavior.

The color visualization makes a change visible. Time-series comparison makes its structure analyzable.

The Digital Twin provides a spatial visualization and a comparative model of actual product behavior.

05 | ANN

The Additional Contribution of ANN

Use Tempris LyoCLC® with Artifical Neural Networks (ANN) to turn hidden potential into measurable customer success.

A person can compare individual temperature curves and recognize clear differences. As the number of sensors, positions, process runs, and equipment increases, however, the number of possible relationships grows very quickly.

Artificial Neural Networks (ANN) can systematically compare complete temperature time series. They search for subtle, recurring, or group-specific patterns that are not readily apparent from a single-value view or purely visual evaluation.

ANN can, for example, support the ability to:

  • cluster vials with similar temperature behavior,
  • recognize recurring position-dependent differences,
  • identify run-to-run changes,
  • classify deviations in the time-dependent profile,
  • and provide relevant patterns for model-based evaluation.

ANN does not calculate the Kv value independently, nor does it replace a physical model. Rather, time-series analysis reveals which structures and differences should be considered in a Kv-oriented evaluation.

Three levels of insight therefore complement one another:

  • Product temperature: What is actually happening inside the vial?
  • Digital Twin: Where and under which conditions is it happening?
  • ANN and models: Which recurring relationships are relevant to the process decision?

Use Tempris LyoCLC® with Artifical Neural Networks (ANN) to turn hidden potential into measurable customer success.

06 | Learning

A New Way of Working in Lyophilization:
Not more measurement, but more learning from every measurement

Tempris creates the foundation for learning purposefully from every run.

Connecting real product temperature, spatial context, physical models and time-series analysis changes the role of every experiment. A run is no longer merely an isolated result. It becomes part of a growing, comparable knowledge base spanning product, process and equipment.

This shifts the way of working:

  • from broad empirical searching to the targeted testing of a process hypothesis,
  • from individual curves to the comparison of complete product responses,
  • from averages to the differentiated evaluation of critical vial groups,
  • from recipe transfer to evidence of comparable product behavior,
  • and from one-off evaluation to reusable process knowledge throughout the lifecycle.

The economic benefit emerges wherever this knowledge improves the next decision: in experimental planning, scale-up, technology transfer, engineering runs and PPQ, and later in CPV and deviation assessment.

Tempris therefore provides more than data from a run. Tempris creates the foundation for learning more purposefully from every run for the next industrial decision.

Tempris creates the foundation for learning purposefully from every run.

Implementation

From Perspective to Practical Implementation

The strategic consequence is clear: more data alone does not create process knowledge. What matters is how real product data is placed in spatial and temporal context, linked to physical models and translated into a robust process decision.

LyoINSIGHT shows how direct product temperature measurements, spatial process context, physical models and time-series analytics are brought together in a structured approach.

1
Measure
2
Contextualize
3
Compare
4
Model
5
Decide
6
Learn