Get High Quality Samples with your Drive-Point Piezometer
The results from short-term and long-term groundwater monitoring studies have shown that samples taken from Direct-Push wells are comparable in quality to those obtained from conventional monitoring wells (ITRC, 2006).
Maintaining Sample Integrity
The 615 Drive-Point Piezometer tip comes with an inner barbed fitting to attach 5/8" OD x 1/2" ID Teflon® or LDPE sample tubing. The Model 410 Peristaltic Pump uses 5/8" OD x 3/8" ID tubing in medical grade silicone. The tubing from the 615 Drive-Point Piezometer tip can be simply connected to the 410 Peristaltic Pump tubing with a short length of 1/2" OD tubing.
This setup maintains sample integrity from the Drive-Point Piezometer tip to the sample discharge at surface, even when inexpensive carbon steel extensions are used. Connecting the tubing from the Drive-Point Piezometer tip to the pump head prevents sample water from contacting the steel extension rods of the 615 Drive-Point Piezometer during sampling. The piezometer tips and screens are made of high quality stainless steel, allowing a “clean” sample.
In addition, when using the Model 410 Peristaltic Pump, the samples come in contact only with the tubing, also helping to maintain sample integrity.