Super Shock Liquid Chlorinator Commercial Grade Super Shock offers a commercial-grade, 12.5% strength liquid chlorine, certified by EPA for its quality. This sodium hypochlorite solution comes in convenient 1-gallon jugs, with four jugs per case. It's easy to use, quick, and highly effective, certified to EPA standards. You can pour it directly into your pool or use it with a peristaltic metering pump for shock treatment and sanitization. This liquid chlorine is an excellent alternative to tablet and granular chlorine products, with no build-up of scale or cyanuric acid (CYA-stabilizer). Suitable for various industries, these gallon jugs are perfect for professional pool and spa operators and are available from EcoQuality.