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Water Purification Systems

Water Purification Systems | ASTM D1193 & ISO 3696 Reagent Water

A laboratory water purification system turns municipal tap water into the reagent grades a working lab depends on, from Type III rinse water through to 18.2 MΩ·cm Type I. Qualitest covers that whole chain with four ranges aligned with ASTM D1193 and ISO 3696. Analytical, clinical, pharmaceutical, and QC laboratories use them for instrument feed, media preparation, and trace-level analysis.

Choosing a range starts with the water grade your methods demand and the volume you draw each day. Feed water conductivity and bench space narrow it from there, since dual-pass RO suits hard or variable supply while compact cabinets fit crowded benches.

Why Choose Qualitest for Your Water Purification System

Qualitest North America supplies testing and measurement equipment to laboratories, quality teams, and manufacturers, backed by responsive technical support and calibration service. The Water Purification System range is built for reliable, standards-driven results, so you can source confidently from a single partner. Our team helps you match the right configuration to your samples, applicable standards, and throughput, then supports you through installation and beyond.

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Tell us your daily volume, your feed water quality, and the grades your methods require, and we will point you to the right range and model. Contact the Qualitest team for pricing, lead times, and configuration advice.

Applications

Water grade sets the floor for many laboratory measurements, so the system behind the tap affects results across the bench.

  • Chromatography and Mass Spectrometry: low-TOC Type I water for HPLC, UPLC, and LC-MS mobile phases, blanks, and rinse solutions.
  • Trace Elemental Analysis: 18.2 MΩ·cm water for ICP-MS, ICP-AES, and AAS blanks and dilutions at sub-ppb levels.
  • Life Science and Molecular Biology: endotoxin-free and nuclease-free water for cell culture, PCR, IVF, and protein work.
  • Pharmaceutical and Clinical QC: purified water for wet chemistry, dissolution testing, analyzer feed, and cleaning validation rinses.
  • Media, Buffer, and Reagent Preparation: reagent grade water for microbiological media, standards, and dilution series.
  • Glassware Washing and Autoclaves: Type III and DI water for wash cycles, final rinse, and low-scale sterilizer feed.
  • Chambers, Baths, and Incubators: humidification and reservoir water that leaves no mineral deposit on probes or specimens.

Water Purification System Range

Four ranges cover the grades a laboratory needs, from tap water pretreatment to point-of-use polishing. Match the row to the water your methods call for, then size the output to your daily draw.

RangeWater GradeOutputDescription
Ultrapure Water Systems (QualiUWS™)Type I at 18.2 MΩ·cm, plus DI and RO grades10 to 60 L/hNine models across single-pass RO, dual-pass RO, and EDI architectures, producing ultrapure water directly from tap water. Larger builds feed up to five dispensing points from one host.
Type II Pure Water Systems (QualiPWS™)Type II, DI from 10 to above 17.5 MΩ·cm10 to 60 L/hSeven configurations dispensing two water grades from one host, for bulk laboratory supply, instrument feed, and pretreatment of downstream polishers.
RO Water Systems (QualiRWS™)Type III, below 5 µS/cm13 or 25 L/hTwo dual-pass reverse osmosis models with a built-in 1.8 L pressure tank, covering glassware washing, autoclave fill, and pretreatment duty.
Ultrapure Water Polishers (QualiUWP™)Type I at 18.2 MΩ·cm from pretreated feedUp to 2 L/min dispenseTwo platforms for laboratories that already run RO, DI, EDI, or distilled water and need Type I quality at the point of dispense.

Ultrapure systems and polishers each come in four builds: standard, UV for low TOC, UF for endotoxin and nuclease removal, and UVF combining both.

How to Choose the Right Water Purification System

  • For trace analysis, chromatography, or molecular biology: choose an ultrapure system for Type I water at 18.2 MΩ·cm.
  • For an existing RO, DI, or distilled supply: choose an ultrapure water polisher rather than a full system, and keep your current pretreatment.
  • For bulk general-purpose demand: choose a Type II system, which serves both instrument feed and rinse duty from one host.
  • For glassware washers, autoclaves, and pretreatment only: choose an RO water system, the most economical route to Type III water.
  • For hard or high-conductivity tap water: choose a dual-pass RO or EDI build so polishing consumables last longer.
  • For audit trails, LIMS links, and shared departmental use: choose a touchscreen model with cloud logging and multi-user accounts.
  • For crowded benches and satellite labs: choose a compact cabinet with internal storage instead of an external tank.

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Water Purification Systems | Available Products

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Ultrapure Water System

Ultrapure Water Systems

Compare nine ultrapure water system models built to ASTM D1193 and ISO 3696, from compact benchtop units to dual RO and EDI builds. Request a quote…
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