Visit us at the 99th Glass Technology Conference in Würzburg, Germany on June 2 and 3
From September 27 to October 2, we will be at the International Conference on Silicon Carbide and Related Materials in Yokohama, Japan
Visit ilis at the world’s most important trade fair for glass, the glasstec 2026 in Düsseldorf from October 20–23

StrainScope® Tube Tester


  • Function

    Real-time polarimeter for fast and precise measurement of the residual stress in tube glass and tubular products

    Internal stresses affect the mechanical strength of products made of glass, both in the manufacturing process as well as in the further processing. The constant testing and monitoring of residual stresses is therefore an important part of quality control.

    With the StrainScope Tube Tester you can measure residual stresses in glass tubes and products made of tube glass with high spatial resolution precisely and reproducibly in real time. The telecentric optics enable the measurement of tubular glass samples even with large diameters without parallax errors.

    The convenient archive function ensures that all measurement results are fully documented.


  • Features and Benefits

    • Fast and easy operation
    • Objective, reproducible and precise measurement results
    • Flexible for different measuring tasks
    • Complete traceability through automatic result documentation