The Chlorine Breakdown
Let’s explore the differences and relationships between the types of chlorine — free, combined and total.
PHTA Announces Standard Revision of APSP-11 and Calls for Committee Participation
PHTA plans to revise the 2019 Water Quality Standard for Pools and Spas (ANSI/APSP/ICC-11) and seeks experts for the PHTA-11 Committee.