The SEPAP MHE is designed to perform accelerated photoaging of polymers with the aim of understanding the aging mechanisms of polymers exposed outdoors and examining the chemical evolution at a molecular level. Using a mercury vapor lamp, the SEPAP MHE is able to replicate and accelerate the chemical mechanisms responsible for the gradual loss in properties of polymers during their lifetime. The SEPAP MHE is capable of operating at irradiance levels between 90 W/m² and 300 W/m² (290 - 420 nm). Mercury vapor lamp (1000 W) 1040 cm² specimen rack capacity Irradiance range 90 - 300 W/m² (290 nm - 420 nm) Precise control of irradiance, Black Standard Temperature (BST) and chamber temperature Radio-controlled on-rack light and BST monitor XENOSENSIV Chamber temperature range up to 70 °C BST range up to 100 °C Full color multi-lingual user interface Relative humidity control using ultrasonic humidifiers (SEPAP MHE+) Relative humidity range 10 - 95% (SEPAP MHE+) Specimen spray with 60 liter integrated water reservoir (SEPAP MHE+)

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