Yes, they do. Please see the independent lab report for more information. Click here for the gravity filter report

No. The ProOne G2.0 water filter systems do not affect the pH level of the water

TDS stands for “total dissolved solids”. A TDS meter measures the amount of minerals within the water. The ProOne water filter systems remove bad minerals whilst leaving in the good, therefore a TDS test is not meaningful.

Please note that if you are looking to test for contaminant removal, you will need to perform a water test specifically for the contaminant of concern

The ProOne water filter systems take out bad contaminants whilst allowing good minerals to pass through

The more filter cartridges are installed, the faster the water is filtered. Also, the larger the filter cartridge, the faster the water flow rate.

Using one of the 7″, 5″ or M filter cartridges at a time will have a general lifespan of up to 6 months with continual daily use. The 5″ slimline filter will have a general lifespan of up to 4 months. Using more filter cartridges at a time will add their lifespan together. So using two 7″ filter cartridges at the same time results in a lifespan of 12 months. Using three 7″ filter cartridges at the same time results in a lifespan of 18 months

Please have a look at the Replacement Cartridges page to see all the available filter elements

A silver infused outer ceramic shell and a carbon based granular media inside the core. No harsh chemicals

If you notice a slowdown in the flow rate or a difference in the taste or smell of the water, this may indicate the filter cartridge(s) need to be cleaned. If after cleaning, the flow rate does not speed up or you still notice the same taste or smell, it may be time for a replacement cartridge

If you are not using the water filter system for a week or more, it is important to properly store the filter cartridges. Remove the filter cartridges from the filter system and allow them to air dry. Wrap the filter cartridges in a terrycloth towel and store in a dry, cool place. Do NOT put the filter cartridges in a plastic bag or any enclosed container. Do NOT allow the filter cartridges to freeze when wet. Do NOT place the filter cartridges in a microwave oven. When you use the water filter system again, simply reinstall the filter cartridge(s) and flush two cycles of water through the water filter system (discarding the water from the lower container) before using

The filter cartridges do not contain alumina/aluminum components or derivatives

The filter cartridges do not contain coconut based carbons or corn carbons

Add water to the upper container of the water filter system and let gravity do the work

No. Just add water to the upper container of the ProOne water filter systems and let gravity do the work

No. The ProOne water filter systems only use gravity

ProOne has a variety of water filter systems with different sizes to suit your individual requirements. You can see all the available sizes on our portable filter systems page

We suggest discarding the used filter elements in the trash

Instructions are available for each product on the individual product page on the website

The warranty guidelines are shown on the last page of the instruction booklet. This booklet is provided with the product. Alternatively, the instruction booklet can be found on the product page on the website

ProOne products are made of both US and imported non-US components and assembled in Michigan, USA

Open the lab report and use the key command “Ctrl F” on a PC or “Command F” on a Mac to search for a specific contaminant and its removal rate

These water filter systems do not need a plumber, electricity or water pressure.

Follow the instructions from the instruction booklet to clean the product, assemble the product and flush two cycles of water through the water filter system (discarding the water from the lower container) before using

It’s recommended you clean the entire system once a month. Please note that the cleaning process for the filter cartridges is different from the cleaning process of the containers. See instruction booklet for details

Remove the filter cartridge(s) from the upper container by removing the wing nut(s). Please do NOT allow water to enter the blue stem of the filter cartridge. Hold the filter cartridge by the plastic base and place the ceramic portion under cool running water for about 2 minutes. While holding the blue threaded stem, place the filter cartridge under running water or in a bowl of water and scrub the surface using the dark green side of the included sponge. Always scrub away from the blue threaded stem end of the filter cartridge. Rinse well. Please do NOT use any soap on the filter cartridge. Lay the filter cartridge on its side until ready to re-assemble. Re-assemble the water filter system as detailed in the instruction booklet

Remove the filter cartridge(s) from the upper container. Remove the spigot. You may clean the upper container, the lower container and the spigot (thus NOT the filter cartridge(s)) using mild dish soap or a 50-50% solution of white vinegar and water. Use a soft sponge or soft cloth. Rinse well and dry. Reinstall the filter cartridge(s) and spigot as detailed in the instruction booklet

Remove the filter cartridge(s) from the upper container. Remove the spigot. You may clean the upper container, the lower container and the spigot (thus NOT the filter cartridge(s)) only with liquid dishwashing soap. Rinse well. Reinstall the filter cartridge(s) and spigot as detailed in the instruction booklet

Remove the filter cartridge from the upper container. You may clean the upper container and the lower container (thus NOT the filter cartridge) using mild dish soap. Rinse well. Reinstall the filter cartridge as detailed in the instruction booklet

Yes. The portable ProOne water filter systems are ideal for travelling, camping, backpacking and hiking. Every ProOne water filter system is portable, does not require water pressure and does not require electricity.

If you need a small and lightweight model to fit into your backpack or suitcase, the Scout II system would be ideal. Otherwise, the ProOne product range includes a variety of models to suit your individual needs