回旋取樣器是為收集流動的液體樣品，如河流，下水道等地方的樣品而設計的。
由于采樣器本身可以回旋，所以允許從不同角度采集樣品，包括90度。
可調玻璃纖維桿從1.83m到3.66m自由伸縮，以便抽取樣品
裝置上有個聚乙烯的采樣瓶和有班輪的蓋子，連接的地方有個可調節(jié)的塑料環(huán)調整連接情況。
When collecting a sample from a horizontal flowing stream, such as a sewer, the Nasco Swing Sampler is specially designed for this application!
The end of the sampler swings, allowing collection from different angles, including 90°.
The 6-ft. （1.83 m） adjustable fiberglass pole extends to 12 ft. （3.66 m） providing a long length for any sampling situation.
Unit comes with a 960 ml polyethylene bottle and the cover has a vinyl liner for leak-proof protection. The bottle is attached to a polyurethane holder and is held in place with a plastic snapper ring that has an adjustable locking device. Other types of bottles may be used but a different type of fastener may be required to hold the bottle in place.