Flow-through macro cell type 170-QS with in/outlet tubes for absorption measurements, window material Quartz High Performance® (200 nm - 2500 nm), volume 240 µl, light path 2 mm, center height all dimensions,outside dimensions 35 mm x 12.5 mm x 12.5 mm, aperture 17.5 mm x 6.5 mm, from Hellma Analytics, 634-9821