purway VOUCHER 5%
Your personal discount code is:
pur2005
You can redeem the discount code multiple times across the entire shop.purway.de range.
In the checkout area on the right you will find the “Discount code” field.
After entering you will receive the discount immediately!
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Market leader since 2006
The purway Crystal Group®
is a specialist in the development and manufacture of innovative filter systems for the national and international market.
purway Crystal Group® stands for quality, sustainability, safety, as well as ergonomic and environmentally friendly solutions.
In this way we meet the most diverse requirements of our customers. All systems are configured according to individual wishes and based on the needs of our customers.
We always have more than
20,000 water filters in our central warehouse
.
More than 20,000 water filters in the central warehouse
For retailers, we offer a perfectly tailored system whether you want cardboard pallet delivery.
Register on our website under Dealer Registration if you have a valid trade license and would like to sell the water filters commercially.
If you have any further questions, we will be happy to help you
at 04721-663050.
TDS (Total Dissolved Solids), PPM (Parts Per Million) and Microsiemens (μS/cm or uS/cm)
Are all terms used in water quality measurement to describe the concentration of dissolved solids in water.
Here is an explanation for each term:1. TDS (Total Dissolved Solids):TDS stands for the total amount of dissolved solids in water. These solids can be various dissolved substances such as salts, minerals, metals and organic compounds. TDS is usually measured in units such as milligrams per liter (mg/L) or parts per million (PPM). It is an important parameter for assessing water quality as high TDS values can indicate an increased concentration of solutes.2. PPM (Parts Per Million):PPM is a unit for measuring the concentration of a substance in a solvent, such as water. It represents the number of parts of solute per million parts of solvent. PPM is often used to quantify the concentration of dissolved solids in water or other liquids. For example, if you have 10 PPM TDS in water, that means there are 10 parts dissolved solids per million parts water.3. Microsiemens (μS/cm or uS/cm):Microsiemens is a unit of measurement for the electrical conductivity of water or other liquids. It measures how well the water conducts electricity, which depends on the presence of dissolved ions. The higher the concentration of dissolved ions in the water, the higher the conductivity and thus the microSiemens value. Electrical conductivity is an indirect indication of the amount of dissolved solids, including salts and minerals, in water.All three terms (TDS, PPM and Microsiemens) are useful parameters for assessing water quality to measure and monitor the concentration of dissolved solids in water.
The usefulness of water filters depends on various factors, including the quality of the source water, the specific needs and concerns of consumers, and the type of water filter used. Here are some important considerations:1. Water quality: In regions with high-quality drinking water from public water supplies, water filters may not be essential. Most water suppliers implement rigorous testing and purification procedures to provide clean and safe drinking water. In such cases, a water filter can be useful to improve taste or remove certain impurities, but is not essential.2. Impurities in the water: If your drinking water has problems such as an unpleasant taste or odor, increased levels of pollutants such as chlorine, heavy metals, bacteria, viruses or pesticides, a water filter can significantly improve the quality of the water. It is important to determine exact needs through water quality testing and analysis.3. Specific requirements: Some people have special requirements or concerns regarding their drinking water, such as allergies or sensitive gastrointestinal tracts. In such cases, using a filter tailored to these specific concerns may make sense.4. Type of water filter: There are different types of water filters on the market including activated carbon filters, reverse osmosis filters, UV disinfection filters and more. Each filter has its own advantages and disadvantages. Choosing the right filter depends on your individual needs and budget.5. Maintenance and costs: Water filters require regular maintenance, including replacing filter cartridges or elements. You should consider the cost of purchasing and maintaining the filter before choosing a filter.Overall, water filters can improve the quality of drinking water. It is advisable to research local water quality regulations and recommendations to make the best possible decision for your water treatment.
The choice between tap water and mineral water depends on various factors including personal preference, local water quality and health concerns. Both types of water are safe to drink, but there are some differences to note:1. Tap water:- Tap water is typically tested for quality and safety by local water companies to ensure it meets drinking water standards.- Water quality can vary from region to region, so it is important to check the quality of tap water in your location. In some regions, tap water can be very high quality and safe.- In many countries, including Germany and the USA, tap water is subject to strict regulations and controls. It is regularly tested for contamination and cleaned.- Tap water can be cost-effective and environmentally friendly as there is no need to purchase and dispose of plastic bottles.2. Mineral water:- Mineral water is natural water obtained from underground sources. It typically contains minerals such as calcium, magnesium and potassium, which can contribute to health.- The mineral content and taste of mineral water can vary depending on its origin and brand. Some people prefer the taste of mineral water.- Mineral water is often marketed as "natural" because it is not treated or purified unless required by law.- The cost of bottled water can be higher than that of tap water and there are additional environmental impacts caused by the transport and packaging of bottles.When it comes to health and safety, both tap water and bottled water are generally safe to drink. The main difference lies in taste, mineral content and individual preferences. Some people prefer the taste of sparkling water due to the natural minerals, while others prefer the taste of tap water.It is important to note that the quality of tap water can vary regionally. It is advisable to find out about local water quality and any contaminants. In some cases, using a water filter can further improve the quality of tap water. Ultimately, the choice between tap water and bottled water comes down to personal preference, environmental considerations and local conditions.
Osmosis systems, also known as reverse osmosis systems (RO systems) are water filtration systems that are based on the principle of reverse osmosis. Osmosis is a physical phenomenon in which solvent (usually water) diffuses through a semi-permeable membrane to equalize a concentration gradient. Reverse osmosis reverses this process to remove impurities from the water.A typical reverse osmosis system consists of several components:1. A pre-filtration:
This step removes coarse contaminants such as sand, mud, rust and sediment from the raw water. This helps extend the life of the reverse osmosis membrane.2. The reverse osmosis membrane:
This is the heart of the facility. The membrane is a semi-permeable barrier that only allows water molecules to pass through while retaining contaminants such as salts, heavy metals, bacteria and organic matter.3. A pressure vessel:
Water is pressurized against the reverse osmosis membrane to initiate the osmosis process.4. A Rejected Water Drain:
While pure water flows through the membrane and is used for drinking water or other applications, there is also rejected water that contains the retained contaminants and is drained away.5. A storage tank or without a tank:
The purified water is stored in a tank to be available when needed. For health reasons, tankless reverse osmosis systems are much safer than systems with a storage tank. Germs and bacteria can form in the storage tank!Reverse osmosis systems are often used for drinking water filtration in homes, offices and other environments to provide clean and drinkable water.
They are able to remove many impurities very effectively and offer high water quality.
Changing water filters every 6 months is a general recommendation based on several reasons!
1. Performance:
Water filters are designed to remove impurities from water. Over time, dirt particles, chemicals and other contaminants can build up in the filter. This reduces the filter performance and the filter can no longer do its job efficiently.2. Health and Safety:
Drinking clean and filtered water is important for your health. If the filter is not changed regularly, contaminants could leak into the tap water, which can pose health risks.3. Taste and smell:
A fresh filter helps your tap water taste and smell better by removing unwanted tastes and odors.4. Extending the life of the filter unit:
Changing the filter regularly can also help extend the life of your water filter unit. If the filter is not changed for too long, this can lead to premature deterioration of the filter unit.However, it is important to note that the recommendation to change the filter every 6 months depends on various factors, including the water quality in your area and the use of the filter. Some water filters may last longer, while others may need to be changed more frequently.
It is advisable to follow the manufacturer's instructions and regularly check the condition of your filter to ensure that it is working properly.
