Nu-Well 220 dispersant polymer uses liquid dispersant chemistry specifically designed to remove mud and clay from the well environment– Successfully develops new wells without using phosphate– Eliminates food source for bacteria (100 percent water soluble, readily flushed from well)– Rehabilitates old wells plugged with clays, silts and fines– NSF approved for potable water well use ApplicationIn new well systems, use Nu-Well 220 dispersant polymer as you would phosphates for drilling mud breakdown and welldevelopment. For optimal removal of bentonite drilling fluids, separately pre-treat the well with 1,500 ppm chlorine to break down the polymers that are included in most commercial bentonite products. Determine borehole volume, and applyNu-Well 220 dispersant polymer at the rate of 1 gal. per 500 gal. of water. Vigorously agitate by mechanical means forseveral hours (approximately 1/2 hour per 20 ft. of intake). If left in the well overnight, agitate before pumping out. Allow aminimum of 6 to 8 hours contact time, downhole. In older well systems use, Nu-Well 220 dispersant polymerto remove fine sands, mud and clays that have filled in the gravel pack and borehole. Use at a rate of 1 gal. per 300gal. of water. Vigorously agitate (by mechanical means), allowing the solution to stand in the well overnight andrepeat the agitation the next day, before pumping out. Allow a minimum of 6 to 8 hours contact time, downhole. Physical properties, shipping and handling:Appearance: Clear, slight amber colored liquidDensity: 10.5 lbs./gal.Specific Gravity: 1.27pH (as shipped): 7.0Freeze point: 20ºF (-3ºC)Solubility: 100% Use range: 0.002 to 0.5% by volume– Not regulated as a hazardous material under 49CFR172.101, RECRA, SARA and CERCLA; however, in storageor use, avoid contact with strong acids or alkaline-based products– 1 gal. and 5 gal. containers can be shipped by UPS ground delivery– Additional physical and handling data are available on the product SDS– Nu-Well 220 dispersant polymer is available in 1, 5, 30 and 55 gal. containers Note: Allowance for additional surface volume should be treatedwith an additional 1 gal. Nu-Well 220 per 500 gal. of surface systemvolume (2 l/m³ of surface system volume)
