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Coil Protective Shield from Nu-Calgon is a must-have for air-cooled condensers, finned heat transfer, evaporator and chiller coils, and other similar AC and refrigeration equipment. This product comes in a 1 qt bottle with a white color and plastic container material. With its pH value ranging from 3.3 to 4.8, it is FDA compliant and safe to use. Removing dirt and debris is made easy and effortless with this product, leaving your coils cleaner and more efficient. Its use will help protect your investment, increase efficiency, prevent future problems, and extend the life of your equipment. With no hazardous materials, it is OK to ship via air and TAA compliant, making it a great choice for any business or homeowner who values safety, efficiency, and longevity of their refrigeration units.