WATER SAMPLER The Geocontrol PRO is a compact and portable controller, weighing less than 8 lbs. It will control all portable bladder pumps, dedicated bladder pumps, and most air lift pumps on the market today, operating from a rechargeable 12 VDC battery. The ultra-reliable mini-compressor inside allows the user to sample from depths to 200′, saving you time and money from using a separate air compressor. The Geocontrol PRO features a push/pull tubing fitting for easy tubing changes, and Polyethylene or FEP tubing is available per foot. When ordering, air tubing requires 0.25″ OD and discharge tubing requires 0.375″ OD. Features : Operates from 12 VDC battery Allows user to sample from depths up to 200 ft. Includes push/pull fitting for easy tubing changes. Includes : Geocontrol PRO DC power cord Portable carrying case Operations manual.