The GHL KH Director is designed to work in conjunction with a GHL Doser 2 (2.1) Standalone or a ProfiLux Aquarium Controller 3 or 4 with a Doser 2 (2.1) Slave joined in conjunction, for adequate operation.
The 2 inlets and 1 outlet of the KH Director connect to 3 dosing pumps on the Doser 2 (2.1). These 3 pumps are then responsible for accurately transferring fluid to and from the KH Director. A sample of the aquarium water is first sent to the KH Director. Subsequently, the KH value is determined precisely with slow addition of a further liquid (reagent) and measurement of the pH value.
The sample water is then pumped out again and collected in a separate container for disposal later on.