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Lab Manager Lab Product Survey Results

6 Questions You Should Ask Before Buying a Water Purification System

Find out the most sought-after features and more from the latest water purification survey results

by Shane Downie

Water is the most commonly used laboratory reagent; however, the importance of water quality is often overlooked. Because impurities can be a critical factor in many research experiments, water purity ranks high in importance. There are several types of impurities and contaminants in water such as particulates, organics, inorganics, microorganisms, and pyrogens that can adversely affect results.

Top 6 Questions You Should Ask When Buying a Water Purification System

  1. What is your application and what type of water is needed? Type I, II, or III? Will you require ultra-low TOC lab water?
  2. What is your expected volume usage? How much is required per batch/day?
  3. What is the source of your current water? Are there special requirements for delivery?
  4. What is your budget? (This will determine the technology). What is the cost of ownership over five years?
  5. Where do you need the system in the lab(s)? Consider: top of counter, under counter or wall mounting the unit. What is the overall footprint/real estate of the system(s) and components?
  6. What kind of warranty and service is provided? Is the system manufactured to quality standards and which ones? Is this a pharmaceutical application that needs to be validated?

ASTM standard water purity used by survey respondents:

ASTM Type I61%
ASTM Type II26%

Water purification system components used by survey respondents:

Water quality monitor56%
Storage tank54%
Dispensing points52%
UV sterilizer45%
Water softener20%

Nearly 51% of respondents are engaged in purchasing a new water purification system. The reasons for these purchases are as follows:

Replacement of an aging system
Upgrading existing equipment
Setting up a new lab
Addition to existing systems, increase capacity
First time purchase

Top 10 features/factors respondents look for when purchasing a water purification system:

Performance of product77%
Durability of product77%
Low maintenance / easy to clean74%
Ease of use74%
Availability of supplies and accessories73%
Value for price paid71%
Low operating costs64%
Service and support64%
Total cost of ownership60%

For more information on water purification systems, including useful articles and a list of manufacturers, visit

See previous survey results: