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Type 2 & 3 Three-Stage Lab Water Purification System

WH Series: WH201P / 501P / 201C / 501C


  • High purity models: WH201P and WH501P: use low odor mixed bed cartridges for applications requiring better than 10 MΩ water quality
    General deionization, battery water filling, humidification, hydrogen generator, glassware rinse, glassware washer, sterilizers
  • High capacity models WH201C and WH501C: provide water quality better than 50 kΩ, for less corrosive applications, ideal for scale reduction and non-stainless steel piping systems
    Environmental chambers, sterilizers, ultrasonic cleaners, chiller loops


A pre-assembled cartridge system that provides deionized water using a staged filtration process. Water purification is provided using a three-stage process.


  • Turn-key system for low cost – on demand service
  • Resistivity light included for visual indication of cartridge replacement
  • Available in high purity and high capacity configurations
  • Available in 2-1/2″ and 4/1/2″ diameter configurations
  • Outlet isolation valve, spanner wrench and associated tubing provided
  • Economically produces DI water

3 Stage Process

  • Stage 1
    Removes particles greater than 5 micron, chlorine, and organics
  • Stages 2 & 3
    Deionizers designed to remove dissolved minerals
Distilled water capacity in gallons
Total Dissolved Solids (TDS as CaCO₃)
High Purity DI Water
Better than 10 Megohm
High Capacity DI Water
Better than 50 Kohm
10 ppm*2650680030008000
100 ppm265680300800
300 ppm90225100265
500 ppm5013560160
Filter technology(1) 10” Carbon Block
(2) 20” High Purity
(1) 10” Carbon GAC
(2) 20” High Purity
(1) 10” Carbon Block
(2) 20” High Capacity
(1) 10” Carbon GAC
(2) 20” High Capacity
Bowl diameter2.5”4.5”2.5”4.5”
Resistivity light200 KΩ20 KΩ
Flow rate0.5 gpm / 1.9 lpm1.25 gpm / 4.7 lpm0.5 gpm / 1.9 lpm1.25 gpm / 4.7 lpm
Total capacity grains as CaCO₃
Typical effluent10 MΩ-cm50 MΩ-cm
ConnectionInlet - 3/8" O.D. tubing
Outlet - 1/2' hose barb
Pressure10 PSIG minimum
100 PSIG maximum
Temperature (max)100˚F / 30˚C
Filter housingPolypropylene
BracketPainted steel
Dimensions (H x W x D)24”x 20”x 626”x 36”x 924”x 20”x 626”x 36”x 9
Shipping weight24 lbs.55 lbs.24 lbs.55 lbs.


Click on the link below to download the associated PDF.

WH Series Auto Pure Water Purifier

Water Purification Systems Buyer’s Guide

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.