<p><span style="font-size:14px"><span style="font-family:Arial,Helvetica,sans-serif">The removal of Victoria blue dye form water and waste water by adsorption on China clay is greatly influenced by the pH of the medium. The pH of the adsorbate solution effect the nature of the surface properties of adsorbents the degree of ionization and speciation of aqueous adsorbate species and ultimately the rate and extent of the adsorption. The initial concentration of the dye taken was 1.0 &times; 10-6 M and the China were agitated at 30&deg; C (&plusmn;&deg;C). The pH of the dye solution was changed from 3.0 to 8.0 using NaOH or HCI solutions of appropriate strength. The results the variation in adsorption with different pH have been recorded.</span></span></p>