DŌS is as simple as telling the Apex Fusion DŌS wizard how much fluid (in ml) you want to pump, and over what time you would like it to happen. The DŌS takes it from there and figures out what speed to run the pump and the exact amount of fluid will be dispensed over that timeframe.
Neptune Systems DOS Dosing & Fluid Metering System
Size (Approx.): 9.5″ x 5″ x 5″
Weight (Approx.): 4 pounds
Lift Height: 24 feet (minimum at MSL)
Suction Height: 24 feet
Flow Rate: Variable (0.1ml – 250ml/min)
Power Requirement: 110/120V or 220/240V
Requires: Apex, Apex Lite, or Apex Jr.