MP50 (Combo Controller / Compressor)

Manufacturer: QED
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The MP50 Micro Purge Basics Controller/Compressor is used to operate QED Well Wizard™ bladder sampling pumps to purge and sample ground water. The MP50 has specific design features to make MicroPurge™ sampling easier.

Key Features

  • MicroPurge Mode Operation - Simple Increase/Decrease keys allow you to easily set the flow rate you need for each well
  • ID Time Set Mode Operation quickly recalls pre-determined settings for each well by specifying a 3-digit ID
  • Level Delay Interface - The controller plugs into the optional MP30 MicroPurge Drawdown / Water Level Meter to provide direct feedback of well drawdown and to pause pump operation until the level recovers
The optional MP30 MicroPurge Drawdown / Water Level Meter plugs into the MP50 to provide water level feedback. The MP30 uses a standard conductivity probe to detect the ground water surface and a marked tape allowing the user to measure the depth. When the meter is set in MicroPurge mode, the probe is lowered a specific distance below the static water level and fixed in this position. During well sampling if the water level drops below the user-set probe position, the MP50 is paused which prevents further drawdown by the pump. Once the level recovers the MP50 begins pump operation again, starting in the pump refill cycle.


  • 16" x 13" x 6.5: (40.6 x 33 x 16.5 cm)


  • 21 lbs. (9.52 kg)

Case Material

  • Structural resin


  • 6 keys


  • 2 line, 16 character
  • LCD

Controller Power

  • 3 AA batteries

Controller Battery Life

  • 50,000 cycles @ 70° F (21° C)

Compressor Power

  • 12V DC (battery cable)

*Maximum Lift

  • 200 ft. (60 m)


  • 0.21 scfm @ 100 psi (0.357 m 3/h@ 6.89 kPa)

Maximum Pressure

  • 105 psi (7.24 kPa)

Operating Temperature

  • -20º to 120º F (-29º to 49º C)

Connection to MP30 Drawdown Meter

  • Heavy-duty cable (supplied with MP30)