Spectra/Chrom* Flow Rate Controller

Usable flow rate range from 5 to 399 ml/hr. Provides microprocessor control of unattended revolutions requiring low flow rates. Eliminates time consuming calibration procedures as well as the damaging pulsing action caused by peristaltic pumps. This flow rate controller uses hydrostatic pressure as its driving force and is regulated with an electronic pinch valve controlled by three photo detectors. These detectors measure the volume of each drop that falls through the flow cell and prevents the controller from running dry. This allows the controller to operate independently of fluid color and viscosity. Fluid path is not suitable for use with organic solvents.