16-08: A Solid Isothiazolone Biocide Controls Microbial Growth In IndustrialIsothiazolone biocides have been used effectively for decades to control microbial growth in a variety of industrial water treatment applications. The most frequently used product is a 3: 1 ratio of 5 Chloro 2 Methyl 4 Isothiazolin 3 one (CMIT) and 2 Methyl 4 Isothiazolin 3 one (MIT). Typically CMIT MIT is dosed into cooling systems as a liquid, but a novel solid version was recently developed. The CMIT MIT solid is safer to handle and easier to