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Compact Ultrapure Water Polisher
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Standards
ASTM D1193
CAP
CLSI
EP
JP
USP
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Compact Ultrapure Water Polisher - QualiUWP™ C

QualiUWP™ C benchtop ultrapure water system fits a full Type I polishing train into a footprint of roughly 273 by 316 mm. That suits laboratories where bench space is the binding constraint rather than daily volume. Feed comes from an existing reverse osmosis, deionization, EDI, or distillation supply, and the unit polishes it to 18.2 MΩ·cm at up to 2 liters per minute. Controls sit behind a three-button acrylic panel with an LCD readout, so operation stays direct with no menu navigation.

One host produces two grades of water. The deionization stage delivers water above 10 MΩ·cm with conductivity below 0.1 µS/cm through its own outlet, while the ultrapure stage carries that water to 18.2 MΩ·cm at the dispense point. Laboratories can therefore draw DI water for glassware rinsing, buffer makeup, and instrument feed without consuming ultrapure cartridge capacity on work that does not need it. Both outlets run from the same host and the same feed connection.

A built-in 1.8-liter pressure tank buffers the output so the unit can meet a sudden draw without waiting on production rate. The enclosed tank structure keeps stored water away from ambient air, which limits the carbon dioxide pickup that quietly drives resistivity down in vented reservoirs. Four configurations are available, from the base QualiUWP™ C through to the UVF model for low-TOC and life-science work. Our application team can match the model to your daily draw and existing pretreatment.

Compact Ultrapure Water Polisher - QualiUWP™ C Applications

The QualiUWP™ C suits small and mid-sized laboratories that need Type I water at the bench without dedicating a service cabinet or wall run to a water system.

  • HPLC, UPLC, and LC-MS: mobile phase and blank water preparation, where organic carryover shows up as baseline drift and ghost peaks
  • ICP-MS, ICP-AES, and AAS: acid dilution and calibration blank water for trace and ultratrace elemental determination
  • Ion Chromatography and TOC Determination: eluent preparation and blank runs where instrument sensitivity is bounded by the water itself
  • GC-MS and MALDI-TOF-MS: extraction, reconstitution, and matrix solution preparation
  • Electrochemical and Spectrophotometric Measurement: electrolyte, standard, and reagent makeup for potentiometry, voltammetry, and UV-Vis work
  • Cell Culture, PCR, and IVF: pyrogen-free and nuclease-free water for media and reaction mixes, available on the UF and UVF configurations
  • Protein Purification, Electrophoresis, and Biochemistry: buffer preparation for workflows sensitive to protease and endotoxin carryover, available on the UF and UVF configurations
  • Proteomics, Genomics, and Immunoassay: sample and reagent water for nucleic acid and protein methods where RNase or DNase traces cut yield
  • Microbiology Media and Reagent Preparation: makeup water for culture media, stains, and routine reagents
  • QC and Cleanroom Laboratories: reagent water for batch release testing and controlled-environment work with limited bench area
  • Instrument Feed Water: DI-grade supply for autoclaves, glassware washers, environmental chambers, and water baths, drawn from the dedicated DI outlet

Standards

The QualiUWP™ C is designed to align with recognized reagent water specifications applied in analytical, clinical, and pharmaceutical laboratories across North America. Output water quality meets or exceeds the Type I definitions in the references below.

  • ASTM D1193 - Standard Specification for Reagent Water, Type I
  • USP - United States Pharmacopeia requirements for purified water and TOC system suitability
  • EP - European Pharmacopoeia requirements for purified water
  • JP - Japanese Pharmacopoeia requirements for purified water
  • CLSI - Clinical and Laboratory Standards Institute guidance on clinical laboratory reagent water
  • CAP - College of American Pathologists laboratory water quality requirements

Compact Ultrapure Water Polisher - QualiUWP™ C Key Features

The QualiUWP™ C pairs a simplified LCD control interface with a built-in pressure tank and dual-outlet dispensing in a compact housing.

  • Three-Button Acrylic Control Panel: fast system setup, forced flushing, and two-way dispensing from a flat panel that wipes clean and avoids submenu navigation during routine use
  • White LCD Status Display: readout up to 68 × 87 mm showing flushing, producing, water-full, and water-shortage states in real time, legible across the bench
  • Built-In 1.8-Liter Pressure Tank: stores and pressurizes finished water so a sudden draw is met immediately, with a fully enclosed structure that isolates the contents from air and limits CO₂ pickup
  • Dual Water Outlets: separate DI and ultrapure taps that let routine rinsing and feed duties run on DI-grade water while polishing capacity stays reserved for analytical work
  • Dual Water Quality Sensors: independent monitoring on the DI and ultrapure lines with real-time alarms when either stream drifts out of range
  • Four-Cartridge Life Management: remaining life tracked for each consumable position with automatic replacement reminders, so water quality does not decline unnoticed between service visits
  • Full Down-Flow Purification Cartridge: patented three-chamber structure holding up to 1.36 L of DuPont resin per cartridge and 2.72 L across two, with a down-flow path that stops the bed stratifying and keeps exchange sites active across the full column
  • Dual-Wavelength UV Module (C-UV and C-UVF): 185 nm and 254 nm output in a SUS316L flow shell that lowers TOC to 2 ppb and suppresses bacterial growth in the loop
  • Ultrafiltration Module (C-UF and C-UVF): PES membrane above 5,000 MWCO that retains pyrogens, endotoxin, RNase, and DNase for cell culture and IVF work
  • Terminal Filtration Choice: 0.45 plus 0.2 µm dual-layer PES microfilter as standard, or a PES terminal ultrafilter above 15,000 MWCO for life-science configurations
  • Patented Cartridge Handling: clamping mechanism and error-proofing geometry that speed up changeouts and block installation of the wrong cartridge in a given position
  • Encrypted Serial Verification: long serial number coding that confirms cartridge authenticity and logs each use and replacement against the host
  • Optional HiDis Dispenser Arm: color display reporting resistivity, water temperature, flow rate, and volume, with 360-degree horizontal positioning and up to five arms per host
  • Injection Molded Housing: single-piece molded panels with geometric surfaces that resist chemical splash and wipe down without seams collecting residue

Theory and Method

The QualiUWP™ C splits purification across two cartridge stages for a practical reason. Deionization cartridges carry the bulk ionic load and bring incoming water above 10 MΩ·cm. A separate ultrapure cartridge then handles only the residual traces that survive that first pass. Loading the two stages unevenly means the expensive polishing resin sees a light duty and lasts far longer than it would as a single combined bed, which matters more on a compact unit with limited cartridge volume.

Resistivity works as the measurement because water sets its own floor. Self-ionization holds hydrogen and hydroxide at 1 × 10⁻⁷ mol/L at 25°C, fixing conductivity at 0.055 µS/cm and resistivity at 18.2 MΩ·cm. Mixed-bed resin approaches that limit by exchanging cations for H⁺ and anions for OH⁻, and the two released ions simply reform water. Any residual salt or dissolved carbon dioxide adds mobile charge and pulls the reading down at once.

Organics and biological contaminants need separate mechanisms. The 185 nm output of the UV module cleaves water into hydroxyl radicals, which break dissolved organics down into carbon dioxide and short-chain acids that the following resin bed can capture as ions. The 254 nm output inactivates bacteria in the same pass. Ultrafiltration works on size rather than charge, retaining pyrogens, RNase, DNase, and protease on a PES membrane placed at the outlet.

Compact Ultrapure Water Polisher

Compact Ultrapure Water Polisher - QualiUWP™ C Technical Specifications

Model Overview

ModelConfigurationSelected For
QualiUWP™ CDeionization plus ultrapure polishing, MF terminal filterAnalytical chemistry, QC, general laboratory work
QualiUWP™ C-UVAdds dual-wavelength UV moduleOrganics-sensitive analysis at 2 ppb TOC
QualiUWP™ C-UFAdds ultrafiltration module and terminal ultrafilterEndotoxin, nuclease, and protease sensitive work
QualiUWP™ C-UVFAdds both UV and ultrafiltrationCombined low-TOC and life-science requirements

Ultrapure Water Quality

ParameterQualiUWP™ CQualiUWP™ C-UVQualiUWP™ C-UFQualiUWP™ C-UVF
Production RateUp to 2 L/minUp to 2 L/minUp to 2 L/minUp to 2 L/min
Resistivity at 25°C18.2 MΩ·cm18.2 MΩ·cm18.2 MΩ·cm18.2 MΩ·cm
Conductivity at 25°C0.055 µS/cm0.055 µS/cm0.055 µS/cm0.055 µS/cm
Total Organic Carbon5 ppb2 ppb5 ppb2 ppb
Particles<1 per mL (>0.2 µm)<1 per mL (>0.2 µm)<1 per mL (>0.2 µm)<1 per mL (>0.2 µm)
Bacteria<0.01 CFU/mL<0.01 CFU/mL<0.01 CFU/mL<0.01 CFU/mL
EndotoxinNot specifiedNot specified<0.001 EU/mL<0.001 EU/mL
RNaseNot specifiedNot specified1 pg/mL1 pg/mL
DNaseNot specifiedNot specified5 pg/mL5 pg/mL
ProteaseNot specifiedNot specified0.15 µg/mL0.15 µg/mL

DI Water Quality

ParameterSpecification (all models)
Resistivity at 25°C>10 MΩ·cm
Conductivity at 25°C<0.1 µS/cm

Feed Water Requirements

ParameterSpecification (all models)
Feed Water TypePurified water treated by RO, DI, EDI, or distillation
Feed Pressure0 to 6 bar
Feed Temperature5 to 40°C
Feed Conductivity<100 µS/cm
Feed TOC<50 ppb

System and Utilities

ParameterSpecification (all models)
Control SystemAutomatic control with three-button acrylic touch panel
DisplayWhite LCD, up to 68 × 87 mm
Water Quality Sensors2 (DI line and ultrapure line)
Consumables MonitoredUp to 4 cartridge positions with remaining-life tracking
Built-In Pressure Tank1.8 L, enclosed storage and pressurization
Purification CartridgeUp to 1.36 L resin per cartridge, up to 2 cartridges (2.72 L total)
UV Module185 nm and 254 nm, SUS316L flow shell (C-UV and C-UVF)
Ultrafiltration ModulePES membrane, MWCO above 5,000 D (C-UF and C-UVF)
Terminal Filter0.45 + 0.2 µm dual-layer PES microfilter, or PES ultrafilter above 15,000 MWCO
Water OutletsDI water outlet and ultrapure water outlet
Voltage100 to 240 V, 50/60 Hz
Total Power120 W
Dimensions (L × W × H)273 × 316 × 568 mm
WeightApprox. 16 kg

Standard Configuration

ItemQuantityDescription
Main Host1 setBenchtop unit with LCD control panel and built-in 1.8 L pressure tank
Cartridges1 setDeionization and ultrapure purification cartridges per model configuration

Optional Accessories

ItemDescription
HiDis Dispenser ArmColor-display dispenser reporting resistivity, temperature, flow rate, and volume, with three dispensing modes and 360-degree horizontal positioning; up to five arms per host
PE Pure Water TankDouble-layer HDPE tank with anti-UV outer layer, cone-bottom drainage valve, sealed enlarged cover, compound air filter with CO₂ absorption and microporous membrane, pressure-sensor level control with LCD volume and percentage display
Tank UV Disinfection ModuleIn-tank UV module that suppresses bacterial growth during storage
Expanded Storage TankLarger pure water tank with liquid level sensor and air filter for higher daily draw
UF Terminal UltrafilterPES membrane above 15,000 MWCO for pyrogen-free and nuclease-free dispensing

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