November 2017 www.chemengonline.com 11 Industrial Crystallization page 30 Facts at Your Fingertips: Filter Aids Focus on Maintenance & Reliability Calcium Hypochlorite Production Cooling Towers Membranes Plant Security Emergency Shutdown Valves Particle Size Analysis CRYSTALLIZATION * COOLING TOWERS VOL. 124 NO. 11 NOVEMBER 2017http://www.chemengonline.com