Patent ID: 6925895

Claim:
A system for simultaneously collecting a representative, non-contaminated sample and an associated field blank, which system comprises: (a) A sample intake; (b) Means for positioning the sample intake in a chosen location within a body of liquid; (c) A first conduit section for transferring a sample, which has been withdrawn from the body of liquid, from the sample intake to a first pump; (d) A second conduit section for transferring the sample from the first pump to a first receptacle for collecting the sample; (e) Means for connecting the second conduit section to the first receptacle to provide an air and watertight seal for the first receptacle, coupled with means for providing for escape of air from the first receptacle during collection of the sample therein; (f) A vessel for holding analyte-free water; (g) Moans for connecting a third conduit section to the vessel for holding analyte-free water to allow an analyte-free water specimen to be withdrawn from the vessel to a second pump through an air and watertight seal for the vessel; (h) A fourth conduit section for transferring the analyte-free water specimen from the second pump to a second receptacle for collecting the analyte-free water specimen; and (i) Means for connecting the fourth conduit section to the second receptacle to provide an air and watertight seal for the second receptacle, coupled with means for providing for the escape of air from the second receptacle during collection of the analyte-free water specimen therein.