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Module 2, Part 1: Introduction and treatment Slide 1 of 23 WHO - EDM Water for Pharmaceutical Use Water for Pharmaceutical Use Part 1: Introduction and. - ppt download
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Module 2, Part 1: Introduction and treatment Slide 1 of 23 WHO - EDM Water for Pharmaceutical Use Water for Pharmaceutical Use Part 1: Introduction and treatment Supplementary Training Modules on Good Manufacturing Practice
Module 2, Part 1: Introduction and treatment Slide 2 of 23 WHO - EDM Water for Pharmaceutical Use Objectives 1. Introduction to Water for Pharmaceutical Use 2. Review WHO GMP guidance 3. Sources and types of water for pharmaceutical use 4. Storage of bulk, untreated raw water 5. Pre-treatment of water
Module 2, Part 1: Introduction and treatment Slide 3 of 23 WHO - EDM Water for Pharmaceutical Use Principles (1) l Like any starting material, water must conform to Good Manufacturing Practice norms l It must be potable and comply with WHO Guidelines for drinking-water quality
Module 2, Part 1: Introduction and treatment Slide 4 of 23 WHO - EDM Water for Pharmaceutical Use Principles (2) 1. Potential for microbial growth 2. Systems must be properly validated 3. Water for parenteral use could be contaminated with pyrogens or endotoxins 4. Specifications and periodic testing is required Annex 5, 7.2.4 Excipients,
Module 2, Part 1: Introduction and treatment Slide 5 of 23 WHO - EDM Water for Pharmaceutical Use Types of water used in pharmaceutical processes 1. Purified water 2. Water for Injections – PFW & WFI 3. Softened Water 4. Water for Final Rinse 5. Pure, or clean Steam 6. Water for cooling Autoclaves
Module 2, Part 1: Introduction and treatment Slide 6 of 23 WHO - EDM Water for Pharmaceutical Use Why purify raw water? 1. Although reasonably pure, it is always variable 2. Seasonal variations may occur in water 3. Some regions have very poor quality water 4. Must remove impurities to prevent product contamination. 5. Control microbes to avoid contaminating products
Module 2, Part 1: Introduction and treatment Slide 7 of 23 WHO - EDM Water for Pharmaceutical Use Contaminants of water (1) l There is no pure water in nature, as it can contain up to 90 possible unacceptable contaminants l Contaminant groups: 1.Inorganic compounds 2.Organic compounds 3.Solids 4.Gases 5.Micro-organisms
Module 2, Part 1: Introduction and treatment Slide 8 of 23 WHO - EDM Water for Pharmaceutical Use Contaminants of water (2) Treatment depends on waters chemistry and contaminants, influenced by: 1. Rainfall 2. Erosion 3. Pollution 4. Dissolution 5. Evaporation 6. Sedimentation 7. Decomposition
Module 2, Part 1: Introduction and treatment Slide 9 of 23 WHO - EDM Water for Pharmaceutical Use Contaminants of water (3) Problem minerals 1. Calcium and magnesium 2. Iron and manganese 3. Silicates 4. Carbon dioxide 5. Hydrogen sulfide 6. Phosphates
Module 2, Part 1: Introduction and treatment Slide 10 of 23 WHO - EDM Water for Pharmaceutical Use Contaminants of water (4) Further problem minerals 1. Copper 2. Aluminium 3. Heavy metals ä Arsenic, lead, cadmium 4. Nitrates
Module 2, Part 1: Introduction and treatment Slide 11 of 23 WHO - EDM Water for Pharmaceutical Use Contaminants of water (5) Micro-organisms – Biofilm 1. Algae 2. Protozoa ä Cryptosporidium ä Giardia 3. Bacteria ä Pseudomonas ä Gram negative, non-fermenting bacteria ä Escherichia coli and coliforms
Module 2, Part 1: Introduction and treatment Slide 12 of 23 WHO - EDM Water for Pharmaceutical Use Biofilm formation 1. Free swimming aquatic bacteria use polymucosaccharides to colonise surfaces 2. Complex communities evolve which shed micro-colonies and bacteria
Module 2, Part 1: Introduction and treatment Slide 13 of 23 WHO - EDM Water for Pharmaceutical Use Turbidity 1. Silt, clay, and suspended material cause turbidity 2. Small particles include "colloids" 3. Removal of colloids is usually the first step in water treatment
Module 2, Part 1: Introduction and treatment Slide 14 of 23 WHO - EDM Water for Pharmaceutical Use Water hardness classification mg/L or ppm as CaCO 3 Soft0-60 Moderate61-120 Hard121-180 Very Hard> 180 Water hardness
Module 2, Part 1: Introduction and treatment Slide 15 of 23 WHO - EDM Water for Pharmaceutical Use Source of raw water 1. Rain water 2. Surface or ground water 3. Well or borehole 4. Municipal or civil – tap water 5. Purchased in bulk
Module 2, Part 1: Introduction and treatment Slide 16 of 23 WHO - EDM Water for Pharmaceutical Use Well water 1. Inspect exposed parts of the well 2. Depth of well Check : 1. Nearby septic systems 2. Hazardous materials usage (pesticides, fertilizers, etc) 3. Potability 4. Well maintenance
Module 2, Part 1: Introduction and treatment Slide 17 of 23 WHO - EDM Water for Pharmaceutical Use Raw water storage 1. May be required prior to pre-treatment according to local circumstances 2. Check material of construction ä Concrete, steel are acceptable but check corrosion ä Plastics or plastic linings may leach 3. Check cover ä To keep out insects, birds and animals 4. Check disinfection practices
Module 2, Part 1: Introduction and treatment Slide 18 of 23 WHO - EDM Water for Pharmaceutical Use WHO water treatment guidance The following should be monitored l Sources of water l Treatment procedures l Water treatment equipment l Treated water tests l Monitoring records required Annex 1, 17.42
Module 2, Part 1: Introduction and treatment Slide 19 of 23 WHO - EDM Water for Pharmaceutical Use Pre-treatment steps 1. Primary filtration and multi-media filter 2. Coagulation or flocculation 3. Desalination 4. Softening
Module 2, Part 1: Introduction and treatment Slide 20 of 23 WHO - EDM Water for Pharmaceutical Use Chlorine removal Activated-carbon (AC) filtration or bisulphite 1. AC removes chlorine but bacteria can then grow 2. AC filtration can remove organic impurities 3. Bisulphite leaves sulphate residues but is anti-microbial
Module 2, Part 1: Introduction and treatment Slide 21 of 23 WHO - EDM Water for Pharmaceutical Use
Module 2, Part 1: Introduction and treatment Slide 22 of 23 WHO - EDM Water for Pharmaceutical Use brine and salt tank brine "hard" water in zeolite water softener -exchanges -Ca and Mg for Na drain "soft" water to deioniser by pass valve Water Softener – schematic drawing
Module 2, Part 1: Introduction and treatment Slide 23 of 23 WHO - EDM Water for Pharmaceutical Use Water pre-treatment complex External raw water storage Pretreatment room
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