QED Environmental Systems is the leading manufacturer of innovative environmental products.
For over 35 years their expertise has included Pumping Systems, Landfill Products, and Air Strippers.

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Controller/Compressor for Low-Flow Sampling | Overview

MP50 Controller / Compressor MP50 Assembly

QED has combined its rugged and reliable fan-cooled 12 VDC air compressor with the time-proven QED MicroPurge® Basics controller to provide an "all-in-one" package.

Expert flow and drawdown control for low-volume purging and air compressor - all in one!

The MP50 also offers an easy way to prevent excessive monitoring well drawdown during purging, by linking to the optional MP30 Drawdown/Water Level Meter.

Simple, stable, repeatable flow rate setting

The MP50 puts you in control of the most advanced low-flow sampling system ever made. You will purge and sample quickly and easily, with precise, steady low-flow pumping rates from one sampling event to the next. QED’s new basics equipment is also designed to take advantage of the opportunities for downsized equipment, which is lighter and more portable, reduces equipment cost and increases sampling crew productivity. Simplified, sealed electronics are put together in a design that delivers famous QED durability and value.

MicroPurge basics controllers can be connected to the MP30 Drawdown Meter for optional Automatic Drawdown Control, an industry first.MP50 Drawdown Controller / Compressor


  • MP10— Digital Low-flow Controller
  • MP10H— High Air Pressure (300 psi) Controller
  • MP10UH— Ultra High Pressure (500 psi) Controller
  • M15— Low-flow Control and Power Pack






MP50 Controller/Compressor Advantages

  • Built-in rugged, durable fan-cooled 12 VDC air compressor, with the option to use an external air source, if desired.
  • Exclusive MicroPurge® control mode uses simple arrow keys to adjust low-flow rates easily and repeatedly, using a microprocessor to re-create the flow adjustment strategies used by experienced samplers.
  • Connection port allows linking to optional MP30 (U.S. Patent Number 6,456,201) Drawdown/Water Level Meter, which signals MP50 Controller to enter standby mode if drawdown limit is exceeded.
  • Multi-mode digital control includes MicroPurge Mode, ID Mode for repeat events, and manual control.
  • Weatherproof controls are housed in a rugged, compact (16" x 13" x 6.5") case.
  • Full digital display of all setting and status information.