Beckman Coulter DU-64 UV-VIS spectrophotometer. A fast scanning spectrophotometer designed to simplify wavelength scanning and provide a reliable source of absorbance readings. Range: 200nm - 900nm. Resolution: 2nm. Readings in Absorbance or Transmission. Scan speeds 750 or 500 nm/min. Single beam. Please contact us for complete Beckman DU64 details.