The Model 464 Electronic Pump Control Unit is fully automatic with preset sample modes from low through high flow sampling. In addition, up to 99 user-created flow rates can be saved. Use with a Solinst Model 407 Bladder Pump or 408 Double Valve Pump for effective VOC and low-flow groundwater sampling. Available in 125 psi or 250 psi versions, these Controllers can also be operated manually, using only a compressed gas source.
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