List Of Abbreviations; Definition Of Terms - Brita PROGUARD Coffee Manual De Instrucciones

1 Introduction
1.1 Function and Application Area
PROGUARD Coffee is a non-electric system that combines several water treatment technologies. It
is designed for the desalination of potable water and its subsequent mineralisation for the production
of water of high sensory quality. The water thus produced is intended to be used as feed water for
coffee, espresso and hot drinks machines only. The targeted mineralisation allows the aroma of hot
drinks to fully develop. The previously performed desalination protects the hot drinks machine from
particles, limescale, gypsum and corrosion.

1.2 List of Abbreviations

RO Reverse Osmosis
°dH Degree of German hardness
TDS Total dissolved solids
µs/cm Microsiemens/cm
App (BRITA
Application for computing devices such as notebooks, tablets or smartphones,
Professional
hereinafter referred to as "App".
Filter Service)

1.3 Definition of Terms

A water filtration method that separates the incoming raw water into so-called
permeate and concentrate. Within the scope of PROGUARD Coffee, a semi-
Reverse
permeable membrane is used that acts as a separator by allowing only water
Osmosis (RO) molecules and gases like carbon dioxide to pass while retaining larger
molecules and ions. The RO-process is described in more detail in chapter 3.1:
How Reverse Osmosis Works in PROGUARD Coffee.
Water that is provided by the municipal water main (usually untreated drinking
Raw water
water).
The share of RO-treated water that passed through a semi-permeable membrane
is called permeate. The membrane of PROGUARD Coffee retains 97 % of
Permeate
all salts in the water. Thus, permeate is very pure water that consists almost
exclusively of water molecules.
The share of RO-treated water that did not pass through a semi-permeable
membrane is called concentrate. In addition to the original salinity of the raw
Concentrate
water, concentrate also contains all those salts that have been retained by the
semi-permeable membrane.
Permeate that has been post-filtered by a mineralisation cartridge in order to
Filtrate
add the desired type of minerals in the desired degree.
The sum of calcium and magnesium ions in the water. These ions can cause
Water hardness
deposits like scale or gypsum.
One can differentiate between two different types of water hardness:
Carbonate hardness and permanent hardness.
Carbonate
hardness
Water hardness
types and other Permanent
salts hardness
Total hardness
Non-hardness
Salt water contains a high share of non-hardness. It bears a much heightened
Salt water
risk of corrosion and has an adverse impact on the taste of coffee products.
Depending on the amount, carbonate hardness, also known as
temporary hardness, can cause limescale deposits (kettle rock)
Depending on the amount, permanent hardness can cause
gypsum deposits
Sum of carbonate hardness and permanent hardness
Apart from the total hardness, water also contains non-
hardness, mainly sodium chloride and sodium sulphate
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