The 407 Bladder Pump has a durable PTFE bladder ideal for dedication, and ensures no air/water contact during groundwater sampling. Inexpensive, disposable LDPE bladders are also available for short term applications.
Solinst offers 316 stainless steel pumps in diameters of 1” and 1.66” (25 mm and 42 mm). They are ideal for low flow and VOC sampling. Maximum lift capability is 500 ft (150 m). Dedicated systems come complete with well caps and tubing. Portable tubing reel units are also an option.