Made for use in obtaining sub-surface water samples for pollution testing. Surface contamination is eliminated. Suited to EPA procedures. Unit is six feet long to provide user-easy access from spillways, docks, boats, without touching the water. Constructed of 3/4"" aluminum tubing with baked enamel finish. Two stainless steel clamps and one-liter graduated sample bottle with TFE-lined cap are included. Weight, 3 lbs.