SPECK SENSORSYSTEME GmbH offers measurement systems and test sites for characterisation of optical materials and coatings. Our philosophy is to build easy-to-operate instruments and software solutions for highest precision technology. Our LID allows the evaluation of material absorption in the sub-ppm range in the bulk or on coated and uncoated surfaces. With our CRD you can determine losses on HR coated optics with nominal reflectivities >>99% with ppm precision. Each device and test site includes a software for the management of measurement data, offering an easily adaptable data base for inline quality control. Furthermore, SPECK SENSORSYSTEME provides industrial users with customer specific solutions for lighting and evaluation for the inline process control.