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Low-flow sampling with MicroPurge®
equipment offers important advantages over traditional purging and
sampling methods, and can benefit many ground-water monitoring programs. It
requires three basic steps:
1. Set the purge flow rate; 2. Control drawdown in the well; 3. Stabilize the purge water quality indicator parameters. MicroPurge basicsTM equipment is a revolution in low-flow sampling control. The complete line of new MicroPurge basics products, combined with proven Well Wizard® pumps, will help you through all three steps with equipment that is easier to use, smaller, lighter, more powerful, and lower priced, too! Every MicroPurge basics component is complete, ready to use, and engineered for rugged field duty. The whole system is designed to let you choose the control and power options that fit your site needs now, with flexibility to meet future requirements. 
Our pump lineup includes controllerless
air-driven pumps for tough cleanup jobs - flows to 15 GPM, deep wells or high
discharge head to 300' corrosive or high-solids conditions, and small diameter
wells 2".
Top and bottom inlet models serve many applications: landfill leachate and condensate control, floating layer skimming, drawdown pumping, ground water cleanup, and more. Fully automatic operation All pumps give you the advantages of advanced controllerless operation. They sense liquid level internally, running when there's enough to pump, and shutting down automatically when well levels drop too low-without cycle timers, electrical connections, downwell probes, or level controls. This makes installation and startup much easier. Hands-off operation is more efficient than conventional pneumatics, saving air and delivering higher flow. Each pump automatically adjusts to its own well conditions. Durability and low O&M Reliable, high-clearance design is engineered to a new standard in each pumps. Critical parts are solid investment castings for superior strength and chemical resistance. Massive, self-cleaning ball check valves provide optimum flow and prevent clogging by solids or viscous substances. Positive action, magnetic assist Hammer Drive air valving ensures dependable operation, even with substandard air quality. Disassembly is easy, and maintenance can be performed in the field, reducing O&M costs and system downtime to an absolute minimum. Specs:  Recovering floating hydrocarbons from ground water is a tough job - with changing viscosity, fluctuating well levels and yields, and difficult site conditions. No one device can deliver optimal performance in every application. QED engineers have worked with extensive customer feedback from the field to develop six different Ferret models to solve real-world problems. There are no easy answers, but the Ferret system is a better answer.
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