Innovating science for over 130 years

Request a Quote Form

Type 1 Ultrapure Economical

WA Series: WA401 / 401UV / 201UF / 201UVUF


Made in USA Low-cost of Ownership Compact design Quick change, cartridge – no tools needed

4LPM of 18 MΩ Type 1 reagent water on demand

Large capacity, low cost consumable cartridges

Premium quality ion exchange resin

Replacement cartridges are fresh and made in the USA.1 year shelf life.


This system provides 4L per minute of 18.2 megohm water. A quiet recirculation pump ensures constant water purity. Water quality meets or exceeds ASTM Type I water specifications.

WA Series Configuration

  • Built-in pressure regulator
  • 0.2 micron filter
ModelWA401 Water system with 0.2 micron capsule filter
WA401UV Water system with 0.2 micron capsule filter and combination UV for bacteria and TOC distruct
WA201UF Water system with 0.05 micron capsule ultrafilter
WA201UVUF Water system w/ 0.05 micron capsule ultrafilter and combination UV for bacteria & TOC distruct
Influent Quality
SourceReverse Osmosis, DI or Distillation
Purity< 20 uS/cm
Filtration0.2 micron
Free chlorine< 0.05 ppm
Silica< 2 ppm
TOC< 50 ppb
Effluent Quality (Standard System)
Purity> 18 Megohm- cm
Microorganisms< 10 CFU / mL
Chlorides< 1 ppb
Sodium< 1 ppb
With 0.05 micron UF Endotoxin< 0.03 EU
Technical Data
Pressure90 PSIG Maximum
20 PSIG Minimum
Temperature100˚F / 30˚C
Flow rate4.0 lpm (1.1 GPM)
2.0 lpm (0.53 GPM) with capsule filter
ConnectionsInlet 3/8” Tube
Outlet 1/4” FNPT
Dimensions (H x W x D)25 in. x 23 in. x 8.5 in. (64 cm x 59 cm x 22 cm)
Weight32 lbs dry / 38 lbs operating (14.5 kg dry / 17.3 kg operating)
Outer shellPowder coated steel
Power requirements120V, 60 Hz @ 1.0 amp
OptionsRemote dispensing gun, 0.05 micron hollow fiber UF filter, combination high-purity/sub-micron cartridge, Reverse osmosis,
direct feed option for auxiliary equipment

Lab Water Purifiers

Solutions are sensitive to contaminants, so any imbalance in the mixture invalidates the results of your experiment. Impure water contains contaminants that pose risks. As a result, water should undergo a purification process to reach a certain level of purity. Our lab water purifiers here at Yamato can help you produce ASTM Type 1, Type 2, and Type 3 water quality. Besides that, our lab water purifiers can help you with the following applications:

Buffers and reagents

A buffer corrects the pH level of any solution. On the other hand, a reagent stimulates a reaction to detect the absence or presence of other substances. Both solutions are prepared by dissolving solid reagents in pure water that are free from any substances that affect the acidity or pH level of the solutions.

Since water is a major solvent involved in creating these solutions, a deionized water system for laboratories is necessary to produce water with high levels of purity. The Yamato Auto Pure WA300 series water purifiers can remove dissolved minerals through high-purity ion exchange resins to process high-quality pure water, which is ideal for preparing both solutions.

Cell culture

Normal water contains compounds that affect cell culture which includes bacteria, endotoxin, organic ions, and organic compounds. These contaminants can cause chemical reactions, changes in pH levels, and disrupt or kill various cells.

Moreover, water is also used in producing buffers and rinsing bioreactors and other materials. Therefore, producing laboratory grade water is necessary. This is usually achieved using Yamato Auto Pure WB300 series water purifiers. These units are great in removing bacteria and particulates to reach type 1 water quality, the highest level of purity in water.

Reverse osmosis

In order to make Type 1 or Type 2 water, feed water quality is important. Reverse osmosis is used as pretreatment of raw water just before feeding it to water purifiers which can produce Type1 or Type 2 water.


Traditional method of producing purified water is distillation, which is the process of separating liquid mixtures through condensation. Academia and certain applications require the heat treated distilled water. Yamato Auto Still series water purifiers can produce distilled water.

40 years as a leading scientific lab equipment provider in the United States.
All products come with a 1 year warranty.
Every product is made through environmentally conscious methods and remains eco-friendly all throughout its life cycle.