FAQ – How Do I Integrate SpectraTrend HT into My Existing Laboratory Color Quality Program?
Answer
SpectraTrend® HT is designed to complement and enhance laboratory color quality programs by providing continuous, real-time process monitoring. Rather than replacing laboratory measurements, STHT helps identify color shifts as they occur so corrective action can be taken before significant quantities of off-spec material are produced.
Why Do STHT and Laboratory Instruments Measure Differently?
STHT uses a specialized inline geometry optimized for process monitoring under actual manufacturing conditions. Laboratory instruments use standardized geometries designed for quality control, specification compliance, and product acceptance. Differences can result from:
- Geometry.
- Illumination.
- Product temperature.
- Surface conditions.
- Process environment.
- Measurement location.
What Is the Best Solution?
The most effective color quality programs utilize:
- Laboratory instruments for quality control.
- STHT for process control.
Together, the systems provide both standardized product measurements and real-time process visibility.
Best Practices
- Establish laboratory standards first.
- Implement STHT as a process-monitoring tool.
- Perform a correlation study during startup.
- Develop STHT action limits based on actual production data.
- Verify significant process shifts using laboratory measurements.
- Periodically review correlations and operating limits.
Practical Guidance
A typical implementation workflow is:
- Establish laboratory standards and tolerances.
- Install STHT on the production line.
- Perform a correlation study.
- Establish STHT operating limits.
- Use STHT to monitor process stability.
- Use laboratory measurements to verify product quality.
This approach maximizes both process control and quality assurance.
Key Takeaway
STHT should be viewed as an extension of the laboratory rather than a replacement for it. The greatest value is achieved when real-time inline monitoring and standardized laboratory measurements work together as part of a comprehensive color quality control strategy.
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To learn more about Color and Color Science in industrial QC applications, click here: Fundamentals of Color and Appearance
