Nanolex Prewash Concentrate 5lNanolex PreWash Concentrate 5L Nanolex PreWash Concentrate is a highly effective and highly foaming alkaline prewash. The carefully balanced mix of surfactants, builders and solvents loosens dirt and removes more stubborn dirt such as insects, oils, grease and soot. While offering a powerful cleaning capability, Nanolex PreWash is safe for most modern materials, including the most sensitive like anodized aluminum. Nanolex PreWash Concentrate was