A Multichannel Syringe Pump for Steady State Flow in Soil Columns1
- P. J. Wierenga,
- R. J. Black and
- P. Manz2
A multichannel syringe pump3 was designed for maintaining a constant rate of outflow over long periods of time. Low flow rates are obtained by using a timer-control which causes the pump to make one cycle per set time interval. The pump is not pulse free, but for many studies requiring steady state water movement in soil columns this is not considered too great a disadvantage. Measured over a 10-day period at a rate of outflow of 173 ml/day, the mean day-to-day variation was less than 0.2 ml/day.
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