Chemical balance equipment (Compliant with recent directives against Covid-19): options from Piscina Azul in the Water Treatment - Sanitizing against. The Chemical balance equipment (Compliant with recent directives against Covid-19) category sits under Water Treatment - Sanitizing against Covid-19 and covers specifications, finishes and installation for residential and hospitality projects. This section currently groups 1 related pages. After-sales support covers spare parts, settings and practical operating guidance.