Dissolved Oxygen Transmitter or DO Transmitter is manufactured by Forbes Marshall. Forbes Marshall is an ISO 9001 certified company. The Dissolved Oxygen Transmitter or DO Transmitter bears the model code AquaDO 4000. Dissolved Oxygen Transmitter is designed for critical applications of DO and temperature measurement in pharmaceutical industrial applications. This user friendly software and minimum push button operations make it easy to handle analyzer with large LCD to view results from distance. Backlit LCD makes the Dissolved Oxygen Transmitter or DO Transmitter suitable to operate in dark areas.