The NEW Model 464 Pump Control Unit is fully automatic with preset sample modes from low through high flow sampling. Use with a Solinst Model 407 Bladder Pump or 408 Double Valve Pump for effective VOC and low-flow groundwater sampling.
Bladders ensure no air/water contact during operation, providing representative groundwater samples and excellent VOC sample results. Bladder Pumps are also EPA approved for low flow groundwater sampling.
Model 408 Double Valve Pumps are positive displacement gas drive pumps that provide high and low flow groundwater sampling, without the use of a bladder. Representative groundwater samples are produced, ideal for VOC sampling.
