ULTRAVIOLET-VISIBLE AND VISIBLE SPECTROSCOPY (UV-VIS AND VIS) SPECTRONIC ™ 200 Visible Spectrophotometer GENESYS™ 30 Visible Spectrophotometer GENESYS™ 40/50 Vis/UV-Vis Spectrophotometers GENESYS™ 140/150 Vis/UV-Vis Spectrophotometers GENESYS™ 180 UV-Vis Spectrophotometer Evolution™ 201/220 UV-Visible Spectrophotometers Evolution™ 350 UV-Vis Spectrophotometer Evolution™ 260 Bio UV-Visible Spectrophotometer