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Laboratory Water Purification Technology, Products and Water Quality Standards
The document details Purite's laboratory water purification systems, highlighting various technologies such as ion exchange, reverse osmosis, and deionisation. It discusses water quality standards and applications across different industries, emphasizing the importance of specific purity levels based on use. Additionally, it describes Purite's equipment offerings and considerations for selecting the appropriate purification system.
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Laboratory Water Purification Technology, Products and Water Quality Standards
- 1. Laboratory water purification Water qualityand application Paul Fowler Export Manager
- 2. 2 Contents • Introduction toPurite • Water Standards and application • Technology • Purite Equipment
- 3. 3 • Purite designs,develops and manufactures water purification systems • For use in applications in laboratory, healthcare and industry. • We specialise in a wide range of technologies, including: • ion exchange carbon filtration • reverse osmosis • electro-deionisation • ultrafiltration. About Purite
- 4. 4 Water Standards • Wateris one of the most important raw materials used for research & development, laboratory and production applications. • Quality of raw water drawn from the mains or local borehole supplies can be extremely variable. • Measures need to be in place to purify the water to suitable standards. • Specific water purity standards have been developed over the years. • Quality of water required is linked to application.
- 5. 5 Water Standards BS ENISO 3696:1995 • Three standardised grades, expressed in terms of conductivity as below: Grade Microsiemens(MIN) Resistance(MIN) pH Si(ppb)max 1 0.1 10 N/A 10 2 1 1 N/A 20 3 5 0.2 5-7.5 N/A
- 6. 6 Water Standards ASTM D1193-06(2011) • Four standardised types, expressed in terms of conductivity as below. Further graded on bacterial, Endotoxin requirement as more application specific: Type Grade Microsiemens(MIN) Resistance(MIN) pH Si(ppb)max cfu/ml max Endotoxins Eu/ml max I 0.056 18 3 I A 0.056 18 3 10/1000 0.03 I B 0.056 18 3 10/100 0.25 I C 0.056 18 3 100/10 II 1.000 1 3 II A 1.000 1 3 10/1000 0.03 II B 1.000 1 3 10/100 0.25 II C 1.000 1 3 100/10 III 0.250 4 500 III A 0.250 4 500 10/1000 0.03 III B 0.250 4 500 10/100 0.25 III C 0.250 4 500 1000/100 IV 5.000 0.2 5-8 IV A 5.000 0.2 5-8 10/1000 0.03 IV B 5.000 0.2 5-8 10/100 0.25 IV C 5 0.2 5-8 100/10 Most people refer to ASTM standards, but interpretation varies
- 7. 7 Water Standards • Otherspecialised standards exist for industries such as the electronics and semiconductor industry where specific metal specifications need to be met. • The healthcare industry also has its own set of standards.
- 8. 8 Applications • Type IV Non-Critical work. Water baths, autoclave and disinfector feed, environmental chambers, plant growth rooms. Type 1 production. • Type II/III General Lab use. Glassware rinsing, media preparation, pH solutions & buffers, reagent preparation. Type 1 production. • Type I Water critical applications. Clinical Analysers, HPLC, GC, AA, ICP-MS, advanced analytical techniques, Tissue Culture, Life Science, Molecular Biology. QUALITY - LINKED TO APPLICATION
- 9. 9 Technology-RO • Latest ROtechnology can improve water quality and lab productivity. • RO is a powerful method of producing purified water for a wide range of laboratory duties. • Modern units will pre-filter and de-chlorinate the raw water feed, then pass through semi permeable polymer RO membranes. • The permeate passes through the membrane which removes up to 98% of the minerals and salts, plus virtually all colloids, microorganisms, endotoxins and organic macromolecules.
- 10. 10 Technology Deionisation • Deionisation canbe used purify water. • It uses a mixture of resins to remove anionic and cationic contaminants from the feedwater, exchanging with active hydrogen and hydroxyl ions, which combine to form water molecules. • Deionisation can be used alone to produce Grade 1 (>10 MΩ) water, but is uneconomic at high TDS levels or for high usage (>100l/day). • Generally the most efficient treatment is a combination of RO and Deionisation.
- 11. 11 Technology Laboratory systems • Specificationshould begin with consideration of the standardised grades of water purity. • Having established the level of purity required, then the volume needed should be assessed. • This is followed by the decision to install a centralised or stand-alone unit. • Choice is dictated by overall costs and the operational demands of each option. • Purite has developed a range of stand-alone units designed to meet the needs of the modern laboratory
- 12. 12 Quality Considerations? QUALITY -LINKED TO APPLICATION • RO WATER (5 – 35 µs) – Feed for Humidifiers, Autoclaves, Lab ring mains. • DI WATER (1 – 10 MΩ) – Glassware rinsing, Reagent make- up, Media prep, General Lab use. • HPLC GRADE WATER (>10 MΩ) – HPLC, Ion Chromatography, Atomic Adsorption, Analyser feed. • ULTRA PURE WATER – (18.2 MΩ) – Tissue Culture, Life Science, Molecular Biology.
- 13. 13 Equipment Labwater Descale Analyst HP Purewater 300 Fusion Neptune
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- 15. 15 Labwater Range L3G EDIVariants Low volume users 1-10l/d Schools Dentists Grade 2 (1-10 µs)
- 16. 16 Labwater 1 &2 Cartridges LABWATER 1 • 1 – 10 µs • 160 Litre apacity • Colour exchange indication • Optional dispense gun LABWATER 2 • 1 – 10 µs • 320 litre capacity • Colour exchange indication • Optional dispense gun
- 17. 17 Select Range Nomenclature • Descale- Base RO Unit with pre-treatment • Analyst - Descale & DI • HP - Analyst with UMF & Recirculation
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- 19. 19 Select Range • 40– 3.6 litres / hour • 80 – 7.2 litres / hour • 160 – 14.4 litres / hour • 320 – 30 litres / hour * Size based on daily usage per a 10 hour working day
- 20. 20 Select Descale • Applications −Washing machines − Rinsing − Humidifier feed − Autoclave feed • Configuration − Carbon Pre-treatment − Reverse Osmosis − Integrally Close Coupled (ICC) or external tank
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- 22. 22 Select Analyst • Applications −Reagent make up − Media preparation − Atomic Adsorption − Glassware Rinsing • Configuration − Carbon Pretreatment − Reverse Osmosis − Deionising Resin − ICC or external tank
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- 24. 24 Purewater 300 • Applications −Laboratory glassware washing − 20lt internal tank − Dishwasher connection − >1MΩ.cm • Configuration − Carbon Pre-treatment − Reverse Osmosis − Deionising Resin − ICC Tank
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- 26. 26 Select HP • Applications −Ion HPLC − Chromatography − Tissue Culture − Fluorescence • Configuration − Carbon Pretreatment − Reverse Osmosis − Deionising Resin − Recirculation Loop − 0.1µm internal bacterial filter − 0.2µm POU filter − ICC or External Tank
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- 28. 28 Select Fusion • Applications −Dual quality water − Analytical >1MΩ.cm − Life Science upto18.2MΩ.cm − UPW up to 50lt/day max − 40, 80, 160, 320 variants − Bacteria <0.1CFU/ml, TOC <5ppb − Endotoxin <0.001EU/ml • Configuration − Carbon Pretreatment − Reverse Osmosis − Deionising Resin − Recirculation Pump − Nuclear Resin Polish − Ultrafiltration − Dual UV treatment 185/254nm − 0.2µm POU filter
- 29. 29 Fusion Configuration NB -Carbon Filter External to Unit
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- 31. 31 Tank Options • Internal20lt Tank − 40 − 80 − 160 − 320 • External Tank − 50lts - 40, 80, 160 − 100lts - 320
- 32. 32 Neptune – 3Variants • Applications − Guaranteed 18.2MΩ.cm − Analytical − Life Science − Ultimate − Needs a pretreated water supply − 20µS/cm − Dispenses 2 litres / minute
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- 35. 35 Product Selection Considerations • Whatflow rate is required? (litres/hr or litres/day) • What is the demand pattern? (how much needed at once) • What quality of water is required? (Grade or Type) • What is the end use application? (General Lab etc) • What quality is the feedwater? (TDS) • What is the mains pressure? (bar or psi)
- 36. 36 Contact Purite Purite Ltd BandetWay Thame, Oxon OX9 3SJ UK Tel: +44 (0)1844 217141 Fax: +44 (0)1844 218098 Email: [email protected] www.purite.com