top of page
Frequently Asked Questions

Thank you for your interest in General Water Technologies. We pride ourselves on our customer service, so if you have more questions or would like clarification on any answers listed here please give us a call or email us HERE. 
- The GWT Staff

Do you make Lab Water Polishers?

Yes and No. No… GWT does not make Lab Water Polishers. Yes.. GWT provides tanks filled with cation(+) and anion(-) resins mixed together for laboratory use to provide complete deionization or “Polishing”. Deionization (DI), demineralization or ion exchange removes ions from feed water using synthetic resins. Deionization is the only technology which consistently produces the resistivity requirements for Type I / Ultrapure / Reagent Grade Water.

What is Annual Recertification?

The Annual Warranty Recertification is a comprehensive assessment and service which extends the GWT 100% parts and labor warranty. This is the same warranty provided during the initial startup and integration of your GWT analyzer feed system. The Recertification service includes installation of all needed consumables and also provides a new 1 year certificate of water quality which attests that the water meets or exceeds CAP/CLSI Type 1 water standards.

How do you help prevent costly down time to lab analyzers?

General Water Technologies prevents downtime in your water feed system through our backup bypass system, our unique issue resolution procedures, our 24/7 technical phone support and our fast emergency service. GWT has never left a client partner without water – ever! 

How do you prevent bacteria buildup?

Through 24/7 recirculation, & UV Treatment GWT’s ultra pure water is kept clean and free of bacteria. 

We are getting inconsistent results from our lab water system, how does your system improve output?

By using our multi-step purification processes GWT’s water systems produce the most reliable results of any system on the market, so you can have confidence in the ultra pure water our systems produce.

How does Osmosis work?

Osmosis is the net movement of water or other solvent across a selectively permeable membrane driven by a difference in solute concentrations on the two sides of the membrane. In reverse osmosis, an applied pressure is used to overcome osmotic pressure, a colligative property, that is driven by chemical potential, a thermodynamic parameter. The result is the solute is retained on the pressurized side of the membrane and the pure water or other solvent is allowed to pass to the other side. Reverse osmosis can remove many types of molecules and ions from water and other solutions, and is used in both industrial processes and in producing purified water. 

What is Reagent Grade Water?

Reagent grade water is purified water that meets the specifications set by ASTM and CAP/NCCLS for: Conductivity, Total Silica, Total Organic Carbon, Chlorides, Sodium, pH, Max Heterotrophic Bacteria Count and Endotoxins.

More about Reagent Grade Water & Laboratory Water Systems

What is Type 1 Water?

Type I Water is purified water that meets the specifications set by ASTM and CAP/NCCLS for: Conductivity, Total Silica, Total Organic Carbon, Chlorides, Sodium, pH, Max Heterotrophic Bacteria Count and Endotoxins.

More about Reagent Grade Water & Laboratory Water Systems

More about Type I and Type II Water


How should a GWT Ultrapure Water System be maintained?

Our systems should be maintained by authorized technicians and/or operators through continuous vigilance. Noting the carbon filter integrity and final water quality will alert the user to changes or conditions that need to be addressed. IE. replacement of the filters or mixed-bed deionizer tanks.

What if my water purification system isn’t working?

For GWT Client Partners: Make sure the system has power. Also if you may have had a power spike or brown out, follow the instructions to power the unit down and restart. If this doesn’t resolve your problem call us at 1-888-586-5654 and we will get your system back up and running for you.


If you have a system other than a GWT system: Try Powering your system down and restarting. If this doesn’t resolve your problem you will need to contact the manufacture for assistance, or talk to our sales and support staff to get a more reliable water purification system installed.


What standards do GWT Water Systems meet?

GWT Meets or exceeds all common standards for Ultrapure Water. Including but not limited to: ASTM, CAP/NCCLS, NCCLS/CLSI, USP 20, Type I, Type II, and Type III


What is a Cabinitized Water Purification System?

A Cabinitized system is one that has been engineered to fit inside an enclosed installable cabinet. This minimizes the onsite installation requirements and allows for a more complete factory testing procedure.


Do I need a storage reservoir?

That depends… in most applications you will need a storage reservoir to get the most out of your GWT Ultrapure Water System. You can count on us to help you get the system that will best suit your specific requirements.


Where do I buy replacement cartridges for your water systems?

You can purchase them wherever quality filters are sold or directly form GWT and take advantage of our pricing.


Do you make drinking water filtration systems?`

No… Although you can drink the water from our systems they are designed to a much higher specification, with the needs of specialized equipment in mind. In fact the water from our systems is so pure that it is missing many of the common trace minerals that give the best drinking water that crisp taste.


Do you make Clinical Analyzer Water Systems?

Yes… GWT provides systems that deliver ultrapure water for clinical analyzers. We are experts in providing Clinical Analyzers with a consistent supply of the highest quality lab water.


Do you make Ultrapure Water Systems?

Yes… GWT provides systems that deliver Type I water for clinical analyzers, and at the lowest cost per Liter. General Water Technologies systems are also very compact compared to other ultra pure water systems.


How long have you been in business?

General Water Technologies has been helping businesses with their Ultra Pure Water Needs Since 2001


What are the different types of water?

There are many grades of water specified by the CAP/NCCLS for reagent water. Typically Type I, Type II, Type III and Type IV although there are terms commonly used such as deionized water and reverse osmosis water.

You can read more about the different types of water and water treatment on the pages linked below.

More about Type I & Type II Water

More about Water Deionization

More about Reverse Osmosis


Can you tell me what type of water I need?

Yes… based on the outcome you desire, and our extensive experience, GWT can recommend the system and components to provide the ultra purified water to insure your results.


Why use a GWT Water System?

General Water Technologies is the industry leader in providing pure and ultrapure water.

Read more about what makes GWT the best!


What is Reverse Osmosis?

Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane. RO systems remove virtually 99% of contaminants in water including bacteria, pesticides, fluoride and other dessolved ions.

More about Reverse Osmosis Water Systems

bottom of page