The process of deinking in the pulp and paper industry is known for eradicating the ink from the paper fibers of the recycled paper for converting it into deinked pulp. For doing this, you will require a mixture of deinking chemical agents and mechanical action. In this process, the ink is removed from the secondary fibre suspension; however, foam formed by the deinking chemical can remove ink particles by using floatation. The deinking chemicals are known to be based on the surfactants, conjointly blends and fatty acid soaps. There are various varieties of the deinking chemicals available with the Maxim Specialty are deinking with bleaching, washing and floatation. The deinking chemicals will act as the collector which will float out the removing ink particles from pulp suspension. For calculating the deinking potency, you have to measure the increase in brightness from the waste paper to the finished paper along with it to measure the Effective Ink Concentration (ERIC) of the paper.