Materials

• AquaClear PVC is recommended when dealing with metals and need more durability and weight than a traditional polyethylene bailer.
• FEP™ /Teflon is typically used when sampling for organics.
• Polyethylene (HDPE) is also recommended when sampling groundwater for metals, and is perfect for most applications.

Check Valves

• Single check groundwater bailers have only one check valve at the bottom to retain the sample during retrieval.
• Double check groundwater bailers have an additional check valve at the top to eliminate sample contamination during retrieval when sampling at a specific depth (point source sampling.)

Weights

• The weights are used to facilitate a more rapid sink rate to decrease overall time required to collect a groundwater sample.