It has been intensively researched to find out the differences of coating and noncoating fertilizer characteristic. Adsorption of water evaporate. pH resistance and influence of material contact area were examined. A distinction between two material structures was analyzed with infrared spectrophotometer. https://www.spidertattooz.com/OPI-GelColor-The-Color-That-Keeps-On-Giving-0-5-oz-HPJ07-p22791/