The test system comprises a stainless steel chamber with a large window as well as a rotation disk for moving the textile samples. The test conditions are automatically controlled by a PID controller. The ozone is measured with a single beam photometer – selectively and without cross-sensitivities to solvents (VOC). The chamber door can be locked and sealed with corrosion-free stainless steel door locks. For safety, the system comprises an ozone destroyer, an activated carbon filter and an interior light as well as a release signal for opening the chamber.