PUREWASH
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WHAT IS PPM AND TDS?
TDS- stands for total dissolved solids. This is the accumulation of minerals measured in Parts
Per Million or PPM in your tap water. In NZ our typical water quality ranges from 50- 80 PPM.
Below is a picture of the meter that takes the reading of the water quality and is sold with
every WWWCS system.
WHAT IS DEIONISED WATER?
Deionised water is water that has had almost all of its mineral ions removed. We can remove
all these minerals that cause water spots through a process of filtration called ion exchange.
It's a method that has been around for a long time most often used by laboratories to produce
purified water on demand and other industries from medical through to skin care.
The end result is purified water that won’t leave mineral deposits – water spots – on your car
or windows! The bottom line is that a PUREWASH system is a blend of filtration and deionisa-
tion which gets the best results in the industry for spot free cleaning.
WHAT ARE SEDIMENT FILTERS?
Sediment filters are designed to remove suspended solids, which are also known as sedi-
ment, turbidity, or particulate. A sediment filter essentially functions like a net that catches
unwanted dirt particles as your water flows through the system.
Water can contain all sorts of
sediment from rust to insects, dirt, algae and bits of washed in plant matter.
Sediment filters have a limited function. Only sediment that will become trapped in the bed of
natural media is removed. Trace pathogen elements, heavy metals, and volatile organic com-
pounds can still remain in the water.
Sediment filters are particularly beneficial when working
in rural areas (well water) and are a cheaper alternative than the carbon filters for this purpose.
WHAT ARE CARBON FILTERS?
Carbon filters remove sediment but they also remove chlorine, volatile organic compounds
(VOCs), odours and unpleasant tastes from water. Carbon filters contain activated carbon,
which is made through a special manufacturing process that creates more bonding sites. As
water passes through a carbon filter, impurities like VOCs and heavy metals become chemi-
cally bonded to the carbon. As the water works its way through the filter, a lot of unwanted
impurities will become stuck to the carbon bonding sites and the water will leave the filter
much more pure than it came in.
Carbon filters are e
ff
ective at removing the impurities that bond to carbon. Not all impurities
do. Sodium, for example, is able to pass directly through carbon filters without being re-
moved.
FREQUENTLY ASKED QUESTIONS
