DNP has proven system integration capability for online water analyzer packages deployed in water and wastewater treatment plants, including critical refinery and petrochemical applications. The system integration activities are executed in line with approved project specifications and Quality Assurance Plans (QAP). DNP has successfully executed highly engineered online water analyzer systems approved by Engineers India Limited (EIL) for refinery projects, including analyzers for H₂S in water, oil-in-water, ammonia & COD measurement. These systems were engineered, integrated, tested, and supplied in compliance with stringent refinery specifications and project requirements.