DEVICE FOR SPECTROPHOTOMETRY OF LIQUID SAMPLES Russian patent published in 1997 - IPC

FIELD: spectrophotometry of low-absorption liquid samples with characteristic values of absorption coefficient χ~10^-4. SUBSTANCE: device is manufactured in the form of prism which faces are parallel and perpendicular in pairs. One of pairs forms input and output faces and is perpendicular to plane of dispersion of device and to radiation axis. Inside upper part of prism there is located along its axis nonthrough tetrahedral prismatic space with faces parallel and perpendicular in pairs. Distances between two pairs of faces are not equal to one another. Prism is fitted with unit for turn through 90 deg relative to axis formed by crossing of diagonal planes of space. relation of smaller distance to bigger one between two pairs of faces is not less than relative hole of device. EFFECT: enhanced functional reliability. 3 dwg