Ratio:Matic® pumps consist of two FMI pump heads direct coupled to a single variable speed drive. Each pump head is independently adjustable, and a variety of pump head sizes can be used in combinations to achieve dispensing ratios from 1:1 up to 1000:1. Ratio:Matic pumps are ideal for dual channel dispensing as low as 2 µL per dispense, as well as proportional metering of two fluids into a single fluid stream up to 4 L/min continuous flow. Controlling two pump heads with a single drive motor and controller provides simplicity of control, as well as, significant cost savings.