Geoprobe® Screen Point 22 Sampling
The Geoprobe® Screen Point 22 (SP-22) sampling device is utilized in conjunction with the Geoprobe® DualTube™ Sampling System. The SP-22 screen is typically utilized after the depth to groundwater has been confirmed by collecting soil samples with the Geoprobe® DualTube™ Sampling System. Once the surface of the water table has been confirmed, the SP-22 screen is lowered inside the Geoprobe® 2.25-inch rods and the rods are slowly retracted 4-feet to expose the screen below the Geoprobe® DualTube™ cutting shoe. With the stainless steel screen exposed, and the water table surface intersecting the screen, clean dedicated tubing is lowered inside the screen and groundwater is extracted utilizing a peristaltic pump and/or a stainless steel check ball valve.