Peritoneal Dialysis (PD) has been the main method of treatment for Thai End-Stage Renal Disease (ESRD) patients under the "PD First" policy of the Universal Coverage (UC) scheme. The increased demand has resulted in not only supply chain logistical problems, but also product quality concerns. Peritonitis, the main complication and main cause of failure in Continuous Ambulatory Peritoneal Dialysis (CAPD) patients, could be caused by product defect. This cluster randomized trial will be conducted in participating Peritoneal Dialysis Outcomes and Practice Patterns Study (PDOPPS) centers in Thailand to assess if a check list intervention could reduce peritonitis rate and increase the number of product defect report.