- Dispenses throughout the day.The Compsey Dispenser was designed in New Zealand where it has been used successfully for dispensing magnesium sulphate into the drinking water of dairy
cows and cattle. Basically it is a simple device and consists of an outlet nozzle
and inlet tube fitted to the screw cap of a plastic container. When the container
is ¾ filled with a solution heavier than water and floated upside down in a water
trough a gradual interchange of liquids takes place. The heavier liquid flows out
through the nozzle and water flows into the container through the plastic tube.
Some mixing takes place in the container (via the holes in the inlet tube) as the
water moves to the top of the container. The volume of liquid in the container
remains the same throughout, although the concentration of the solution flowing
into the trough will weaken as the dispensing period continues.
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