Water Quality Parameters – Detailed Engineering Guide Water quality testing is essential in hospitals, hotels, commercial buildings, industrial facilities and residential properties. It helps engineers determine whether water is safe for human consumption, suitable for equipment operation, and appropriate for HVAC, cooling towers, boilers and plumbing systems. Four important parameters are pH, Total Dissolved Solids (TDS), Turbidity and Hardness. Understanding these parameters helps MEP and Facility Management engineers identify water-quality problems and select suitable treatment methods. 1. pH – Acidity and Alkalinity Definition: pH measures how acidic or alkaline water is. It is measured on a scale of 0–14. pH value Water condition Below 7 Acidic 7 Neutral Above 7 Alkaline Common drinking-water guideline: 6.5–8.5 is a commonly used operational and aesthetic range, although applicable local ...
HVAC Deviation & CAPA in Pharmaceutical Industries – Complete Engineering and GMP Guide 1. Introduction: What is HVAC Deviation? In pharmaceutical manufacturing, HVAC (Heating, Ventilation and Air Conditioning) systems are critical utilities that maintain controlled environmental conditions in production areas, laboratories, dispensing rooms, packaging areas and cleanrooms. Unlike conventional commercial HVAC systems, pharmaceutical HVAC systems must maintain specific environmental conditions to protect: Product quality and integrity. Patient safety. Personnel health and safety. Cleanroom classification. Prevention of cross-contamination. Compliance with Good Manufacturing Practice (GMP). An HVAC deviation occurs when an actual system condition or operational event differs from an approved specification, validated state, SOP, operating procedure or acceptance criterion. For example: Room temperature exceeds the approved operating limit. Relative humidity moves outside the spec...