Before you start to use a pure water system, it may help you to know how the systems work. Depending on the area you work in, there will be different levels of TDS (Total Dissolved Solids) present in the water. The TDS level will ultimately determine how much the water needs to be filtered in order to use the water for cleaning windows. Many areas of Michigan, for example, have very low TDS (around 125 parts per million) and many of our window cleaners can therefore get away with a smaller, simpler system.

To have water pure enough to clean windows without leaving behind water stains, the exported water needs to be below 10 PPM. It will help to check the water before using it to clean windows. If the number is higher, it may be a sign your filters need to be replaced.

What kind of system do you need? Use a TDS meter on the tap water to find out.

• TDS of 150 PPM or less = DI resin only
• TDS of more than 150 PPM = multi-stage system (Carbon filter –> RO filter –> DI Resin)

DI RESIN ONLY:

What is DI resin and what does it do?

The simplest Pure Water filtering system consists of just a DI resin canister/tank that water is run through from the tap to the tank to the waterpole. This single stage filtering system can make Pure Water from most tap water. When working with tap water of a TDS of more than 100, this system can become very costly and less time-efficient. The DI resin will be used up much more quickly and will need to be replaced frequently. Because of this, you will want to make sure you know the TDS levels in the areas you typically work in.

To lengthen the life of the DI resin, the addition of RO filters and carbon filters can aid the process.

MULTI-STAGE SYSTEM:

What are all these filters and what do they do?

• Carbon Filter: In a multi-stage system, the carbon filter comes first. The filter consists of charged carbon and absorbs impurities to help the other filters do their job. Think of this as a large sieve that captures larger particles. Then the water passes through the next stage.
• RO Filter: This is the second stage of a multi-stage system. The reverse osmosis filter uses a semipermeable membrane to further purify the water. It traps a large concentration of impurities.
• DI Resin: The final stage in a multi-stage system, the Deionization or Ion-exchange Resin consists of charged resin beads that “polish” the water and complete the process of making it into Pure Water. With a multi-stage system, about 80-90% of the impurities have been removed before they reach the DI resin.

Our team at Detroit Sponge is very knowledgable abut the best pure water systems on the market. Call us at (800) 535-6394 or send us an email to customerservice@detroitsponge.com to talk with our staff. Let us help you with questions and purchasing of your pure water system! Shop all of our pure water systems and pure water packages on our website.

Continue reading...