The PrimeStar fluid is a premium, borate-crosslinked guar fluid in a sodium bromide-based brine, making it ideal for applications where excessively high surface treating pressures would be required when using conventional water-based fluids. The fluid’s increased density yields greater hydrostatic head pressure, allowing for significant reductions in surface pumping pressure and the associated hydraulic horsepower requirements. PrimeStar fluids perform in a typical temperature range of 100 to 300°F (38 to 149°C), but with an additional additive, they may be used at temperatures up to 350°F (177°C).