Our water balance and shock chemicals, marketed under the Fi-CHEM brand name , play an important part in ensuring your chosen sanitiser works to full effect and in protecting the structure and fittings of your pool. The specifications of the products are amongst the most stringent in the industry, giving you the confidence of knowing that with Fi-CHEM products, you are buying the best. For your additional peace of mind these products are packed in strong multi-walled polythene bottles with child resistant caps.