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s64 <br />Apply wisely. We <br />will never have a <br />chance to recover <br />the chlorides <br />applied. <br />Guidelines for prewetting <br />Prewetting is adding a liquid to the salt as it is being applied — <br />either at the spinner or through a soaker pipe in the auger <br />box —to help it stick to the road better. Although prewetting <br />requires some equipment changes, it provides flexibility to <br />switch the chemical makeup depending on conditions. <br />• Salt brine, calcium, magnesium chlorides, and acetates <br />may be used as prewetting agents. <br />• The optimal application rate is 8 to 14 gallons /ton for salt <br />brine. <br />• Prewetting with other chemicals at the spinner can help <br />reduce the application rate. <br />• Below 15° F, salt brine is less effective than other liquids <br />and may freeze hoses and valves. <br />• Salt brine should be mixed at 23.3 %. <br />• <br />