FS-Series PV Module Cleaning Guidelines - First Solar
2017-8-25 · Water must be free of floating oil or other immiscible liquids, floating debris, excessive turbidity, and objectionable odors. When using water, RO water provides the best results. When RO water is not available, tap wa-ter with low mineral content (total hardness <75 mg/L) or deionized water may be used. Cal-cium should not exceed: 75 mg/ml.
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