{"product_id":"millipore-milli-q-direct-q-8-uv-water-purification-system-zrqsvp800","title":"Millipore Milli-Q Direct-Q 8 UV Water Purification System ZRQSVP800","description":"\u003ch2\u003eMillipore Milli-Q Direct-Q 8 UV Water Purification System ZRQSVP800 – Used\u003c\/h2\u003e\n\u003cp\u003eThe Millipore Milli-Q Direct-Q 8 UV, reference ZRQSVP800, is a laboratory water purification system designed to produce both Type 3 reverse osmosis water and Type 1 ultrapure water directly from potable tap water. Combining reverse osmosis purification, polishing cartridges, and UV treatment in a compact laboratory system, the Direct-Q 8 UV provides purified water for analytical chemistry, molecular biology, buffer and reagent preparation, laboratory glassware rinsing, instrument feed, and other research applications.\u003c\/p\u003e\n\u003cp\u003eThe Direct-Q 8 produces purified reverse osmosis water at a nominal rate of 8 liters per hour while providing Type 1 ultrapure water with resistivity up to 18.2 MΩ·cm at 25°C. The UV-equipped configuration is designed to reduce total organic carbon to ≤5 ppb under specified operating conditions, making it useful for applications where both ionic and organic contamination must be controlled.\u003c\/p\u003e\n\u003cp\u003eThis used Millipore Direct-Q 8 UV is available from American Instrument Exchange with the existing cartridges currently installed in the system. New cartridges are not included. Because purification cartridges and final filters are consumable components, their remaining service life and ability to meet original manufacturer water-quality specifications should not be assumed. Replacement cartridges may be required depending on the intended application and required water quality.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMillipore Milli-Q Direct-Q 8 UV water purification system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReference \/ catalog number ZRQSVP800\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProduces both Type 1 ultrapure water and Type 3 RO water\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNominal Type 3 production rate of 8 L\/hour at 25°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eType 1 resistivity up to 18.2 MΩ·cm at 25°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUV configuration designed for TOC levels ≤5 ppb under specified conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBuilt-in reverse osmosis purification\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUV treatment for organic reduction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePoint-of-use ultrapure water dispensing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with application-specific final polishers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for potable tap-water feed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompact laboratory water purification platform\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExisting installed cartridges included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNew purification cartridges are not included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAvailable used from American Instrument Exchange\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe Millipore Direct-Q family was designed to simplify laboratory water purification by generating both pure and ultrapure water from a single compact system.\u003c\/p\u003e\n\u003cp\u003eIncoming potable tap water first undergoes pretreatment and reverse osmosis. This produces Type 3 water while reducing ionic, organic, particulate, and other contaminants present in the incoming feed water.\u003c\/p\u003e\n\u003cp\u003eWater intended for higher-purity applications undergoes additional purification through the system's polishing components. In the UV configuration, ultraviolet treatment further reduces organic contamination before the water reaches the point of delivery.\u003c\/p\u003e\n\u003cp\u003eThe result is a flexible water purification platform capable of supporting both general laboratory water requirements and more demanding ultrapure-water applications.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eMillipore \/ Milli-Q\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Family\u003c\/td\u003e\n\u003ctd\u003eDirect-Q\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eDirect-Q 8 UV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference \/ Catalog Number\u003c\/td\u003e\n\u003ctd\u003eZRQSVP800\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEquipment Type\u003c\/td\u003e\n\u003ctd\u003eLaboratory Water Purification System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeed Water\u003c\/td\u003e\n\u003ctd\u003ePotable Tap Water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Types Produced\u003c\/td\u003e\n\u003ctd\u003eType 1 Ultrapure and Type 3 RO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType 3 Production Rate\u003c\/td\u003e\n\u003ctd\u003e8 L\/hour at 25°C ±15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType 1 Resistivity\u003c\/td\u003e\n\u003ctd\u003eUp to 18.2 MΩ·cm at 25°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType 1 Conductivity\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.056 µS\/cm at 25°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTOC with UV\u003c\/td\u003e\n\u003ctd\u003e≤5 ppb under specified operating conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTOC without UV\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 ppb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType 3 Ionic Rejection\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;96%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType 3 Organic Rejection, MW \u0026gt;200\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType 3 Bacteria \u0026amp; Particulate Rejection\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltrapure Dispensing\u003c\/td\u003e\n\u003ctd\u003ePoint-of-Use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV\u003c\/td\u003e\n\u003ctd\u003e185\/254 nm UV Treatment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical\u003c\/td\u003e\n\u003ctd\u003e100–230 VAC, 50–60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eUsed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCartridges\u003c\/td\u003e\n\u003ctd\u003eExisting Installed Cartridges Included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNew Cartridges\u003c\/td\u003e\n\u003ctd\u003eNot Included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eType 1 and Type 3 Water from One System\u003c\/h3\u003e\n\u003cp\u003eOne of the principal advantages of the Direct-Q 8 UV is its ability to provide two useful grades of laboratory water from the same purification platform.\u003c\/p\u003e\n\u003cp\u003eType 3 water is produced through reverse osmosis and can support routine laboratory applications that do not require ultrapure water.\u003c\/p\u003e\n\u003cp\u003eAdditional purification converts water into Type 1 ultrapure water for more sensitive laboratory applications.\u003c\/p\u003e\n\u003cp\u003eThis dual-water capability allows laboratories to reserve ultrapure water for procedures that genuinely require it while using RO water for less demanding applications.\u003c\/p\u003e\n\u003ch3\u003e8 Liter per Hour RO Production\u003c\/h3\u003e\n\u003cp\u003eThe Direct-Q 8 designation reflects the system's nominal reverse osmosis production rate.\u003c\/p\u003e\n\u003cp\u003eMillipore specifies approximately 8 liters per hour at 25°C, with a ±15% production tolerance.\u003c\/p\u003e\n\u003cp\u003eActual production can vary with feed-water temperature, pressure, quality, membrane condition, cartridge condition, and other operating factors.\u003c\/p\u003e\n\u003cp\u003eFor laboratories with moderate daily purified-water demand, this capacity can provide a practical balance between production rate and system footprint.\u003c\/p\u003e\n\u003ch3\u003eType 1 Ultrapure Water\u003c\/h3\u003e\n\u003cp\u003eThe Direct-Q 8 UV is designed to produce Type 1 ultrapure water with resistivity up to 18.2 MΩ·cm at 25°C when operated under the manufacturer's specified conditions with properly maintained purification components.\u003c\/p\u003e\n\u003cp\u003eA resistivity of 18.2 MΩ·cm represents extremely low ionic contamination and is commonly associated with high-quality laboratory ultrapure water.\u003c\/p\u003e\n\u003cp\u003eMaintaining this level of water quality depends on appropriate feed water, system condition, purification cartridge condition, UV performance, final filtration, sanitization, and routine maintenance.\u003c\/p\u003e\n\u003ch3\u003eUV Treatment and TOC Reduction\u003c\/h3\u003e\n\u003cp\u003eThe UV-equipped Direct-Q configuration incorporates ultraviolet treatment to improve organic water quality.\u003c\/p\u003e\n\u003cp\u003eThe dual-wavelength UV lamp emits at 185 and 254 nm. The 185 nm wavelength assists in oxidation of organic molecules, while UV treatment also contributes to microbial control within the purification process.\u003c\/p\u003e\n\u003cp\u003eMillipore specifies total organic carbon of ≤5 ppb for the UV-equipped Direct-Q under appropriate operating conditions.\u003c\/p\u003e\n\u003cp\u003eThis lower organic background can be useful for analytical and research applications that may be affected by organic contamination in laboratory water.\u003c\/p\u003e\n\u003ch3\u003eReverse Osmosis Purification\u003c\/h3\u003e\n\u003cp\u003eReverse osmosis forms the primary purification stage of the Direct-Q 8.\u003c\/p\u003e\n\u003cp\u003ePressure forces incoming water across a semipermeable membrane, substantially reducing dissolved ions, organic contaminants, particulates, microorganisms, and other impurities.\u003c\/p\u003e\n\u003cp\u003eMillipore specifies greater than 96% ionic rejection, greater than 99% rejection of organics with molecular weight above 200, and greater than 99% rejection of bacteria and particulates under specified conditions.\u003c\/p\u003e\n\u003cp\u003eThe resulting Type 3 RO water can either be used for appropriate general laboratory applications or undergo additional purification to produce Type 1 water.\u003c\/p\u003e\n\u003ch3\u003eUltrapure Water Polishing\u003c\/h3\u003e\n\u003cp\u003eAfter reverse osmosis, water intended for Type 1 use passes through additional purification stages.\u003c\/p\u003e\n\u003cp\u003eThe polishing pack is designed to remove trace ionic and organic contaminants remaining after the upstream purification process.\u003c\/p\u003e\n\u003cp\u003eA point-of-use polishing device can provide an additional final purification stage immediately before water is dispensed.\u003c\/p\u003e\n\u003cp\u003eThe exact final water quality depends on the installed purification components and their condition.\u003c\/p\u003e\n\u003ch3\u003eExisting Cartridges Included – New Cartridges Not Included\u003c\/h3\u003e\n\u003cp\u003eThis used Direct-Q 8 UV is being sold with the purification cartridges currently installed in the system.\u003c\/p\u003e\n\u003cp\u003eThese are existing cartridges and should not be represented as new cartridges.\u003c\/p\u003e\n\u003cp\u003ePurification cartridges are consumable components whose performance and remaining useful life depend on previous water usage, feed-water quality, storage conditions, maintenance history, and total operating time.\u003c\/p\u003e\n\u003cp\u003eAmerican Instrument Exchange therefore does not represent the existing cartridges as having a particular remaining service life.\u003c\/p\u003e\n\u003cp\u003eCustomers whose applications require documented or consistent ultrapure-water specifications should plan to evaluate the installed consumables and replace them as necessary.\u003c\/p\u003e\n\u003ch3\u003eWhy Cartridge Condition Matters\u003c\/h3\u003e\n\u003cp\u003eWater purification performance depends heavily on consumable condition.\u003c\/p\u003e\n\u003cp\u003ePretreatment cartridges protect downstream reverse osmosis components from contaminants such as particulates and chlorine. Polishing packs remove trace ionic and organic contamination, while point-of-use filters or polishers provide application-specific final treatment.\u003c\/p\u003e\n\u003cp\u003eAs these consumables age or become exhausted, their ability to maintain specified water quality can decline.\u003c\/p\u003e\n\u003cp\u003eFor this reason, buyers should distinguish between the operational condition of the Direct-Q system itself and the condition of its consumable purification components.\u003c\/p\u003e\n\u003ch3\u003eProgard Pretreatment\u003c\/h3\u003e\n\u003cp\u003eThe Direct-Q purification architecture uses a Progard pretreatment cartridge upstream of the reverse osmosis stage.\u003c\/p\u003e\n\u003cp\u003eIts purpose is to protect the RO membrane from feed-water contaminants that can reduce membrane performance or operating life.\u003c\/p\u003e\n\u003cp\u003eThis includes protection against particulate loading, mineral scaling, and chlorine-related oxidation.\u003c\/p\u003e\n\u003cp\u003eBecause the pretreatment cartridge is a consumable item, replacement requirements depend on the condition of the installed cartridge and the characteristics of the laboratory's incoming water.\u003c\/p\u003e\n\u003ch3\u003eQ-Pak Polishing\u003c\/h3\u003e\n\u003cp\u003eThe Q-Pak purification pack performs the final polishing required to produce ultrapure water.\u003c\/p\u003e\n\u003cp\u003eIt removes trace levels of ionic and organic contaminants remaining after the upstream purification stages.\u003c\/p\u003e\n\u003cp\u003eQ-Pak condition therefore directly influences the quality of the ultrapure water produced by the system.\u003c\/p\u003e\n\u003cp\u003eThe existing purification pack supplied with this used system is not represented as new, and laboratories should replace consumables when required for their application.\u003c\/p\u003e\n\u003ch3\u003ePoint-of-Use Final Purification\u003c\/h3\u003e\n\u003cp\u003eThe Direct-Q platform can be configured with a final point-of-use purification device selected according to application requirements.\u003c\/p\u003e\n\u003cp\u003eDifferent final polishers can target particulates, microorganisms, endotoxins, nucleases, or other contaminants depending on the selected configuration.\u003c\/p\u003e\n\u003cp\u003eWater-quality specifications associated with a particular final filter apply only when the required final purification device is correctly installed and maintained.\u003c\/p\u003e\n\u003cp\u003eCustomers should select the appropriate final polisher according to the intended laboratory application.\u003c\/p\u003e\n\u003ch3\u003eWater Quality for Analytical Applications\u003c\/h3\u003e\n\u003cp\u003eHigh-purity laboratory water is important in analytical chemistry because contamination from the water source can contribute background signals, interfere with reagents, contaminate samples, or affect instrument performance.\u003c\/p\u003e\n\u003cp\u003eThe Direct-Q 8 UV can provide ultrapure water for preparation of compatible analytical standards, buffers, reagents, blanks, and other solutions when the system is equipped and maintained appropriately for the required method.\u003c\/p\u003e\n\u003cp\u003eFor highly sensitive analytical methods, laboratories should establish water-quality requirements based on the specific instrumentation and procedure rather than relying solely on a general Type 1 classification.\u003c\/p\u003e\n\u003ch3\u003eHPLC and Chromatography Support\u003c\/h3\u003e\n\u003cp\u003eUltrapure water is frequently required in chromatography laboratories for preparation of buffers, standards, samples, rinsing solutions, and aqueous mobile-phase components.\u003c\/p\u003e\n\u003cp\u003eThe low ionic and organic contamination achievable from a properly maintained Direct-Q 8 UV can make the system useful in HPLC-support workflows.\u003c\/p\u003e\n\u003cp\u003eSpecific chromatography methods may have additional requirements for TOC, particulates, microbial contamination, degassing, or final filtration.\u003c\/p\u003e\n\u003cp\u003eWater quality should therefore be verified against the requirements of the analytical method.\u003c\/p\u003e\n\u003ch3\u003eMolecular Biology Applications\u003c\/h3\u003e\n\u003cp\u003eAppropriately configured ultrapure-water systems can also support molecular biology workflows.\u003c\/p\u003e\n\u003cp\u003eMillipore specifies very low RNase and DNase levels when the Direct-Q is equipped with the appropriate BioPak final polisher.\u003c\/p\u003e\n\u003cp\u003eThese specifications should not be attributed to the basic Direct-Q system without the required final purification device.\u003c\/p\u003e\n\u003cp\u003eFor nuclease-sensitive applications, users should verify that the appropriate final polisher is installed and within its recommended service life.\u003c\/p\u003e\n\u003ch3\u003eEndotoxin-Sensitive Applications\u003c\/h3\u003e\n\u003cp\u003eMillipore specifies very low endotoxin levels when an appropriate BioPak ultrafiltration cartridge is installed as the final polisher.\u003c\/p\u003e\n\u003cp\u003eThis can support research applications where endotoxin contamination is a concern.\u003c\/p\u003e\n\u003cp\u003eAs with nuclease specifications, this performance depends on the correct final purification cartridge and appropriate system maintenance.\u003c\/p\u003e\n\u003cp\u003eThe Direct-Q 8 UV alone should not be assumed to meet an application-specific endotoxin requirement without the appropriate point-of-use configuration and verification.\u003c\/p\u003e\n\u003ch3\u003eGeneral Laboratory Water\u003c\/h3\u003e\n\u003cp\u003eNot every laboratory application requires Type 1 water.\u003c\/p\u003e\n\u003cp\u003eThe Direct-Q 8 also provides Type 3 reverse osmosis water that can support suitable general laboratory procedures.\u003c\/p\u003e\n\u003cp\u003eDepending on laboratory protocols, RO water may be used for tasks such as glassware rinsing, preparation of cleaning solutions, water baths, humidification, or as feed water for other purification processes.\u003c\/p\u003e\n\u003cp\u003eUsing the appropriate grade of water for each application can help conserve ultrapure-water consumables.\u003c\/p\u003e\n\u003ch3\u003eFeed Water Requirements\u003c\/h3\u003e\n\u003cp\u003eThe Direct-Q system is designed to operate from potable tap water meeting the manufacturer's feed-water requirements.\u003c\/p\u003e\n\u003cp\u003eFeed-water quality can influence RO production rate, cartridge life, membrane performance, maintenance frequency, and final product-water quality.\u003c\/p\u003e\n\u003cp\u003eMillipore specifies feed-water temperature, pressure, conductivity, chlorine, pH, dissolved carbon dioxide, and fouling limits for proper system operation.\u003c\/p\u003e\n\u003cp\u003eLaboratories with unusual or challenging incoming water should evaluate feed-water quality before installation.\u003c\/p\u003e\n\u003ch3\u003eMonitoring Water Quality\u003c\/h3\u003e\n\u003cp\u003eThe Direct-Q includes a display for monitoring system status and water-quality information.\u003c\/p\u003e\n\u003cp\u003eThis allows operators to review operating conditions and respond to maintenance or consumable alerts.\u003c\/p\u003e\n\u003cp\u003eWater-quality monitoring is particularly important with used purification systems because the quality of the water produced depends not only on the hardware but also on the condition of membranes, cartridges, UV lamps, final filters, and other consumable components.\u003c\/p\u003e\n\u003ch3\u003eConsumable Replacement\u003c\/h3\u003e\n\u003cp\u003eThe Direct-Q platform was designed with replaceable purification components.\u003c\/p\u003e\n\u003cp\u003eDepending on system configuration, consumables can include pretreatment cartridges, polishing packs, point-of-use filters, UV lamps, and other maintenance items.\u003c\/p\u003e\n\u003cp\u003eThe system provides maintenance prompts for certain consumables and service functions.\u003c\/p\u003e\n\u003cp\u003eWhen purchasing a used water purification system, laboratories should budget for periodic consumable re\u003c\/p\u003e","brand":"Millipore","offers":[{"title":"Default Title","offer_id":50463937232944,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0252\/1228\/9072\/files\/DSC_0977b.jpg?v=1790021833","url":"https:\/\/www.americaninstrument.com\/products\/millipore-milli-q-direct-q-8-uv-water-purification-system-zrqsvp800","provider":"American Instrument Exchange","version":"1.0","type":"link"}