Norsan Deepclean 5L Concentrate is an exceptional Phosphoric Acid Surface Cleaner & Descaler that is a very versatile cleaning product, suitable for many tasks which has a fresh, lasting citrus fragrance. Norsan Deepclean cleans and descales all types of washable hard surfaces, flooring, toilet bowls and urinals. Deepclean is a very effective remover of tough, ingrained soil and limescale build up.