{"product_id":"yamato-wa301b-auto-pure-lab-water-polishing-system","title":"Yamato WA301B Auto Pure Lab Water Polishing System","description":"\u003cp\u003eThe Yamato Auto Pure WA301B is a high-flow benchtop water polishing system that produces ASTM Type 1 ultrapure water from pre-treated feed water (RO, DI, or distilled). Designed for high-throughput laboratory environments, the WA301B delivers 2.5 L\/min continuous flow at 18.2 MΩ·cm resistivity with TOC \u0026lt;15 ppb and bacteria \u0026lt;1 cfu\/ml — meeting the most demanding analytical and biological purity requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🇺🇸 \u003cstrong\u003eDesigned and manufactured in the USA\u003c\/strong\u003e — domestic support, parts, and service availability\u003c\/li\u003e\n\u003cli\u003e2.5 L\/min continuous flow — highest output in the Yamato water purification lineup\u003c\/li\u003e\n\u003cli\u003e18.2 MΩ·cm resistivity — ASTM Type 1 \/ CLSI Type 1 ultrapure water\u003c\/li\u003e\n\u003cli\u003eTOC \u0026lt;15 ppb and bacteria \u0026lt;1 cfu\/ml for sensitive biological and analytical applications\u003c\/li\u003e\n\u003cli\u003e0.2µm final membrane filter for particle and bacteria removal\u003c\/li\u003e\n\u003cli\u003eResistivity meter with digital display and low-purity alarm\u003c\/li\u003e\n\u003cli\u003eUV lamp for TOC reduction and bacteria control (optional accessory)\u003c\/li\u003e\n\u003cli\u003eCompact polishing-only design — connects to existing RO\/DI or distilled water supply\u003c\/li\u003e\n\u003cli\u003e120V \/ 220V operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The WA301B is a water polishing system — it requires pre-treated feed water (\u0026lt;20 µS\/cm conductivity). It is not a standalone purifier and cannot process standard tap water directly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: green;\"\u003e✓\u003c\/span\u003e \u003cstrong\u003eShips directly from Yamato USA (Santa Clara, CA)\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: green;\"\u003e✓\u003c\/span\u003e \u003cstrong\u003eOrders typically process and ship within 3–5 business days\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: green;\"\u003e✓\u003c\/span\u003e \u003cstrong\u003eIncludes Yamato's full 1-year manufacturer warranty\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: green;\"\u003e✓\u003c\/span\u003e \u003cstrong\u003eProudly manufactured in the USA — domestic parts and service support\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: green;\"\u003e✓\u003c\/span\u003e \u003cstrong\u003e7-day price match guarantee from date of purchase\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color: green;\"\u003e✓\u003c\/span\u003e \u003cstrong\u003eAlaska, Hawaii, and international shipping available — contact us for rates\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch5\u003eTechnical Specifications \/ Comparison\u003c\/h5\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eWE200\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eWG205-115V \/ 220V\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eWA301B\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eWA311B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePure Line\u003c\/td\u003e\n\u003ctd\u003eAuto Still\u003c\/td\u003e\n\u003ctd\u003eAuto Pure\u003c\/td\u003e\n\u003ctd\u003eAuto Pure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePurification Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRO membrane → Ion exchange → Filtration\u003c\/td\u003e\n\u003ctd\u003eIon exchange → Distillation\u003c\/td\u003e\n\u003ctd\u003eIon exchange → Filtration (polishing)\u003c\/td\u003e\n\u003ctd\u003eIon exchange → Filtration (polishing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePurified Water Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDeionized (Type 1 \/ A4)\u003c\/td\u003e\n\u003ctd\u003eDeionized (Type 1) + Distilled (Type 2)\u003c\/td\u003e\n\u003ctd\u003eDeionized (Type 1)\u003c\/td\u003e\n\u003ctd\u003eDeionized (Type 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResistivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 18.2 MΩ·cm\u003c\/td\u003e\n\u003ctd\u003e5-stage conductivity LED\u003c\/td\u003e\n\u003ctd\u003e18.2 MΩ·cm\u003c\/td\u003e\n\u003ctd\u003e18.2 MΩ·cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTOC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;50 µg\/L\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;15 ppb\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;15 ppb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBacteria\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1 cfu\/ml\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1 cfu\/ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlow Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5–1.0 L\/min\u003c\/td\u003e\n\u003ctd\u003e~1.5 L\/h (distilled) \/ ~1.0 L\/min (DI)\u003c\/td\u003e\n\u003ctd\u003e2.5 L\/min\u003c\/td\u003e\n\u003ctd\u003e2.5 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeed Water\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard tap water\u003c\/td\u003e\n\u003ctd\u003eStandard tap water\u003c\/td\u003e\n\u003ctd\u003ePre-treated only (\u0026lt;20 µS\/cm)\u003c\/td\u003e\n\u003ctd\u003ePre-treated only (\u0026lt;20 µS\/cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone — continuous flow\u003c\/td\u003e\n\u003ctd\u003e20L polyethylene tank\u003c\/td\u003e\n\u003ctd\u003eNone — continuous flow\u003c\/td\u003e\n\u003ctd\u003eNone — continuous flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinal Filtration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1µm membrane filter\u003c\/td\u003e\n\u003ctd\u003eOptional membrane filter\u003c\/td\u003e\n\u003ctd\u003e0.2µm filter\u003c\/td\u003e\n\u003ctd\u003e0.2µm filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100–240VAC (universal)\u003c\/td\u003e\n\u003ctd\u003e115V or 220V (external transformer)\u003c\/td\u003e\n\u003ctd\u003e120V, 60Hz, 1.0A\u003c\/td\u003e\n\u003ctd\u003e220V, 50Hz, 0.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eW350 × D430 × H470 mm\u003c\/td\u003e\n\u003ctd\u003eW540 × D575 × H775 mm\u003c\/td\u003e\n\u003ctd\u003e54.8 × 37 × 36.5 cm\u003c\/td\u003e\n\u003ctd\u003e54.8 × 37 × 36.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~30 kg\u003c\/td\u003e\n\u003ctd\u003e~55 kg\u003c\/td\u003e\n\u003ctd\u003e42 lbs dry \/ 47 lbs operating\u003c\/td\u003e\n\u003ctd\u003e42 lbs dry \/ 47 lbs operating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrice\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$5,010\u003c\/td\u003e\n\u003ctd\u003e$7,355\u003c\/td\u003e\n\u003ctd\u003e$11,520\u003c\/td\u003e\n\u003ctd\u003e$11,520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003e* The WE200 and WG205 connect directly to standard tap water. The WA301B and WA311B are polishing systems and require pre-treated feed water (RO\/DI or distilled, \u0026lt;20 µS\/cm) — they are not standalone purifiers.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWA301B Consumable Parts (Sold Separately):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIon-exchange resin cartridge (#WA301-RESIN)\u003c\/li\u003e\n\u003cli\u003e0.2µm membrane filter (#WA301-MF)\u003c\/li\u003e\n\u003cli\u003eUV lamp (#WA301-UV) — optional, for TOC reduction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Feed water must be pre-treated to \u0026lt;20 µS\/cm conductivity before use. Connecting tap water directly will damage the ion-exchange resin and void the warranty.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch5\u003eApplications\u003c\/h5\u003e\n\u003cp\u003eThe WA301B is designed for laboratories that already have an RO or DI water supply and need a high-flow polishing system to achieve ASTM Type 1 purity at the point of use:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Sensitivity Trace Analysis\u003c\/strong\u003e\u003cbr\u003eICP-MS, ICP-OES, HPLC, and atomic absorption spectroscopy require ultrapure water to prevent background contamination. The WA301B's 18.2 MΩ·cm resistivity and \u0026lt;15 ppb TOC meet ASTM Type 1 requirements for these applications at 2.5 L\/min — ideal for high-throughput analytical labs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCell Culture and Biological Applications\u003c\/strong\u003e\u003cbr\u003eWith bacteria \u0026lt;1 cfu\/ml and TOC \u0026lt;15 ppb, the WA301B produces water suitable for cell culture media, buffer preparation, and bioreactor rinsing. For pyrogen\/endotoxin-free requirements (\u0026lt;0.001 EU\/ml), an optional downstream ultrafiltration (UF) cartridge is recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuffers and Reagents\u003c\/strong\u003e\u003cbr\u003eHigh-purity buffer and reagent preparation requires water free from ions, organics, and particulates. The WA301B's polishing process delivers consistent Type 1 water for pH-sensitive and trace-level analytical work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGeneral High-Purity Laboratory Use\u003c\/strong\u003e\u003cbr\u003eSuitable for any application requiring consistent ASTM Type 1 water output at high flow rates — including glassware rinsing, standard solution preparation, and instrument feed water.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Yamato Scientific","offers":[{"title":"Default Title","offer_id":48662471934146,"sku":"WA301B","price":11520.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7691\/8466\/files\/WA301.png?v=1787458789","url":"https:\/\/labstockdirect.com\/products\/yamato-wa301b-auto-pure-lab-water-polishing-system","provider":"Lab Stock Direct","version":"1.0","type":"link"}