BONDERITE® C-AK NP-2 is a phosphorus free, one-pack alkaline spray cleaner. BONDERITE C-AK NP-2 is designed to prepare aluminum, steel, electrogalvanized and hot dip galvanized surfaces to receive a conversion coating or prior to a plating operation. Applied by spray, but it can also be applied by immersion, this alkaline treatment is particularly recommended for use ahead of pretreatment or conversion coating processes.