Spectrophotometers are being used more frequently and for more applications in industrial and research laboratories. Therefore it becomes more important to build various spectrophotometers for specialized applications. This presentation describes three new commercial spectrophotometers, an interference filter colorimeter (range 400 to 700 mμ), a prism spectrophotometer (range 300 to 750 mμ) and a silica prism – glass prism – grating spectrophotometer (range 210 to 5000 mμ).
