DEVICE FOR SPECTROPHOTOMETRIC TESTING OF LIQUID SAMPLES Russian patent published in 1996 - IPC

FIELD: spectrophotometry. SUBSTANCE: device is made in form of prism being transparent for specific spectral range; prism has in pairs parallel faces. One pair of faces forms entrance and exit faces. This pair is perpendicular to plane of dispersion of spectrophotometer and to axis of radiation to be subject to spectrophotometry. There is non-through four-sided prismatic surface with in pairs parallel inside side faces at top part of the pair, at least one pair of which faces is parallel to external side faces of prism and has second order vertical axis of symmetry. Horizontal cross-section of prismatic space is made in form of rhombus, and prism is made with three pairs of external side faces, one pair of which is perpendicular to diagonal plane of prismatic space. This diagonal plane may be matched with axis of radiation to be subject to photometric test when prism rotates relatively second order vertical axis of symmetry. EFFECT: widened exploitation capabilities; improved convenience at operation. 2 dwg