The Nasco Sludge Nabber makes sample collection of liquids fast and easy. It has an adjustable aluminum pole that extends from 4 to 6-1/2 feet (1.22 to 1.99 m), making it easy to reach the liquid to be sampled and carried. The Sludge Nabber is ideally suited for numerous sampling requirements including chlorine in solution. Other sample bottles from 250 - 1,000 ml can be used but a different fastening device such as a cabletie, wire, etc. will be required. Whether testing for chlorine, BOD (biochemical oxygen demand), or SS (suspended solids), the Sludge Nabbers flexibility with holding various bottles, and its adjustable length, allows for effortless sampling. Unit comes with a 500 ml polyethylene bottle. One-year warranty.