The Series 4000 spectrophotometers have been specially designed to cover the complete requirements of water analysis spectrophotometers. Both visible range and UV and visible range instruments are offered, each with or without an integral printer for convenient presentation of results, without the extra space required by an external printer. Whatever special needs your laboratory may have, the 4000 Series instruments are likely to offer the flexibility, power and performance required. Wavelength scanning, cell programming, batch sampling, wavelength programming, time course plotting and reaction Kinetics are all available. Versatility, with Dedication to Water Analysis Performance Superb performance is the result of the excellent specification of the 4000 Series. High stability, low straylight, low noise and high wavelength setting precision ensure that reliable and accurate measurements may be made to 3 Absorbance units.