Franke composite sinks are composed of acrylic and fired granite to provide a textured, durable finish. The nonporous composite material resists stains and bacterial growth, but regular use can cause buildup of hard water minerals, food or detergent residue. Clean your Franke composite sink with a variety of common household cleaners such as dish detergent, vinegar, bleach or oxalic acid powder. With the proper care, you can maintain the look and performance of your Franke composite sink.
Rinse the sink thoroughly with warm water. Apply two or three drops of dish detergent to a nylon scrub brush and scrub the sink thoroughly using a circular motion to remove any residue.
Rinse the sink with warm water to remove any soap residue.
Wipe the sink with a cloth or sponge dampened with white vinegar for hard water mineral deposits. For tougher stains, use bleach cleaner or oxalic acid powder cleanser on a damp cloth or sponge.
Rinse the sink with warm water.
Dry the sink with a towel.