Envco – Environmental Equipment

Specifications
• No Bladder
• Shallow and Deep Lift Capacity (to 3,000 ft.)
• 250 ml or 500 ml Chamber
• Multiple Controller Options (BESST, QED, Solinst, Geotech, and others)
• Variable Tubing Configurations
• Immediate Lift Pressure Ramp-Up
• 30 Year Warranty

Dimension
• 18” L x 1.75 W – 250 ml Chamber (pictured)
• 23” L x 1.75 W – 500 ml Chamber
• Custom Sizes Available

Blatypus How they work

1. Compressed gas combined with control timer repeatedly moves groundwater up and down between two lines
2. BESST’s proprietary valve system draws fresh water into chamber during the recharge cycle and discharges that water during the purge cycle.
3. Groundwater incrementally fills sample return line until water reaches the ground surface.
4. The water interface repeatedly filling the gas-in line never becomes part of the sample stream. No gas comes into contact with the groundwater sample.