What Exactly is a PPM? Chemistry Expert Bob Lowry Explains

The term PPM is thrown around so much in the swimming pool industry that you may not even think about what it even means. But it is a standard measurement used industry-wide and Bob Lowry explains why we use it and how big of a measurement it actually is. Bob Lowry has been in the industry for over 47 years and is the Lead Consultant at Lowry Consulting Group, leads the Pool Chemistry Training Institute, and has created the Certified Residential Pool & Spa Certification Program. Learn mor...