The sample presser is used for solid samples, e.g. plastic films. It ensures a coplanar orientation of the sample on the prism, even if the sample is flexible.Suitable for use with Anton Paar refractometersAbbemat 300 item NC1818534,Abbemat 350 item NC1818535,Abbemat 500 item NC1818537,Abbemat 550 item NC1818539