Frequently Asked Questions about BOROUX water filters and other BOROUX products
Vind hier de antwoorden op veelgestelde vragen van de BOROUX producten. Deze worden van tijd tot tijd ook aangevuld. Alle antwoorden zijn gebaseerd alle informatie uit de kennisbank van de fabrikant, daarnaast aangevuld met onze eigen ervaringen.
Bovenaan vindt je alle antwoorden op vragen (verdeeld over verschillende onderwerpen) over de BOROUX Legacy™ (Compact) waterfilters en de BOROUX Foundation™ Black filters. Onderaan staan de antwoorden op vragen over de BOROUX Proactive™ Fluoride filters, BOROUX Automatische Filter Primer Pomp (elektrisch) en BOROUX glazen drinkfles.
BOROUX Legacy™ (Compact) waterfilters en de BOROUX Foundation™ Black filters
Usage
Can I use a BOROUX water filter with a water softener?
The BOROUX Foundation™ Black filter cartridges are designed to remove heavy metals, but will not remove the mineral salts added by a water softener. This is because a water softener adds mineral salts to the water to make it softer. The salt used to soften water is not extracted by a BOROUX Foundation™ Black filter cartridge and will actually cause the cartridge to become blocked. You can still use a BOROUX water filter if it is possible to bypass the water softener. Most water softeners have a bypass valve or a way to divert water before it passes through the softener. We therefore strongly recommend using that water instead of running softened water through your BOROUX Foundation™ Black filter cartridges.
Water is coming out between the two containers – what’s gone wrong?
If water gets between the upper and lower chambers of your BOROUX water filter, it means that the lower chamber is too full. This happens when the upper chamber is refilled whilst the lower chamber is not yet empty. In this case, the water simply continues to be filtered, causing the lower chamber to overflow. The water then leaks out between the two chambers.
It’s best to fill the top tank completely the first time you fill it. Let this water run through. If you notice that the lower tank is almost empty (as indicated by the sight glass tap or the water pressure), then fill the upper tank right up to the top again. You can do this because the upper tank is slightly smaller than the lower tank and, in addition, the upper tank contains the filters, which take up space. The lower tank therefore has excess capacity compared to the upper tank. By doing it this way, you prevent water from leaking between the two tanks.
Water is leaking from the tap connection – what’s gone wrong?
If water is leaking from the tap’s connection, this is most likely because the tap has not been fitted correctly. So empty the bottom tray and take the tap apart. Then check that all the parts are in the correct position. It’s important to ensure you have one rubber O-ring on the outside and one on the inside. Next, put the tap back in place and tighten the nut (on the inside) as far as it will go. Then hold the nut on the inside in place and turn the tap on the outside. You’ll notice that it becomes even tighter. Carry on doing this until you can’t tighten it any further. If the tap isn’t straight, do the following: loosen the nut on the inside and turn only the tap on the outside until it’s straight. This is because the whole unit rotates as one. If you’ve accidentally turned it too far, DO NOT turn it back. Doing so will simply loosen it again. So, if you’ve gone too far, simply turn the whole thing through again until it’s sitting properly.
If all goes well, the tap shouldn’t be leaking at the connection any more.
After filtering, there’s still some limescale in, for example, a kettle – how is this possible?
It is worth noting that a BOROUX water filter does not completely remove limescale from the water. Larger amounts are reduced and synthetic limescale is removed. However, a BOROUX water filter retains beneficial minerals (those that occur naturally in water and are good for human health) in the water. And limescale (calcium) is one of these. So you retain the mineral calcium in the water, and this can still cause some limescale build-up. In short, a BOROUX water filter is not designed to remove limescale from the water.
The filtration rate of the BOROUX Foundation™ Black filters has noticeably decreased. What can I do about this?
If you notice a significant difference in the filtration rate of the BOROUX Foundation™ Black filter elements, this is a sign that it is time to prime them again. Before cleaning, you should first try to resolve this by priming the BOROUX Foundation™ Black filter elements again. You shouldn’t clean them too often; if you’re using tap water, once every six months is sufficient. If priming does not improve the filtration rate, then it is time to clean the filters. However, you must prime them again after cleaning.
Priming ensures that the air is expelled from the filters, which then allows them to flow through more quickly again. After a while’s use, the air gradually builds up in the filters again. You can do this by Priming Button, the Black Berkey Primer or the Blue Primer Rite use. See also the instructional videos.
If you do need to clean the filters, please refer to the instructions under the heading "Cleaning, maintenance and storage".
The BOROUX Foundation™ Black filter elements each have a different filtration rate – how is this possible?
This is possible! No two BOROUX Foundation™ Black filter elements are the same; they are all unique. As a result, one filter element may be used up more quickly than another. These differences arise during production (the baking process) and you’ll often find that the filters in the same box are roughly the same, but this isn’t necessarily the case. It’s not a problem, then, and nothing to worry about.
How long does it take for the water to flow from the top container to the bottom one?
The top chamber of your BOROUX water filter should have drained completely in about 2 hours on average (a small layer will remain). The better the priming has been, the faster the flow rate will be. So, if it takes considerably longer than 2 hours, we recommend priming again. If this is your first time, the priming process is unlikely to have been successful and there is still too much air in the BOROUX Foundation™ Black filter elements. If you have been using the filter for some time, this is a sign that you need to prime it again.
Priming ensures that the air is expelled from the filters, which then allows them to flow through more quickly again. You can do this by using the Priming Button, the Black Berkey Primer or the Blue Primer Rite use. See also the instructional videos.
Is this the first time you’ve used the BOROUX Legacy™ water filter? If so, the following is just as important:
- The filter rate will increase slightly over the first 12 to 24 hours.
If the flow rate remains low and, as a result, there is still a considerable amount of water left in the upper tank after well over 2 hours, then contact Get in touch with us and we’ll be happy to help you.
My water filter is leaking – how is this possible?
If your water filter is leaking from the tap, check that it has been fitted correctly.
If your water filter is leaking where the two chambers meet, it means your water filter is too full. Only fill the top chamber when the bottom chamber is (almost) empty.
There’s some white stuff on my filter – what is it?
White residues are mineral deposits. They are harmless and, as far as the black filters are concerned, there is no need to replace them. If they are visible on the black filter, rinse them off under running water and wipe them away. If they are visible on the containers or the tap, scrub them off with a mixture of half water and half vinegar. You can also soak the tap in this mixture.
My top tank isn’t draining completely – why is that?
It is normal for approximately 2.5 to 5 cm of water to remain in the upper chamber. As the BOROUX Legacy™ water filter is a gravity-fed water filter, it relies on the pressure and weight of the water to push it downwards and through the filters. As the water flows into the lower chamber, there is less and less weight pushing it downwards (the water pressure in the upper chamber decreases). Furthermore, the water cannot flow through the plastic Stem Saver.
You can dispose of any remaining water if you are going to refill the top chamber of your BOROUX Legacy™ water filter.
My BOROUX Foundation™ Black filter has failed the red dye test – what can I do?
A failed red dye test may indicate that the system has been installed incorrectly. Check the positioning of the wing nuts (on the outside of the upper tank) and washers (on the inside of the upper tank) again.
Refit the filter(s) and run the test again. If it still fails, then contact Join us.
My BOROUX Foundation™ Black filter won’t prime – what can I do?
If the filter won’t prime properly, try the following:
- Leave the filter to soak in water overnight; see the instructional video
- Clean the filter and then prime it again; see the instructional video
- to use a primer for this, see product
Materials
Can the BOROUX Legacy™ water filter rust?
Yes, stainless steel can rust, although it is less likely to do so than other types of steel. Stainless steel contains chromium, which forms a protective oxide layer on the surface that helps prevent corrosion. However, if this protective layer is damaged or if the stainless steel is exposed to harsh environmental conditions, such as high humidity or substances containing chloride, it can still rust. Regular maintenance and proper care can help prevent rust formation in stainless steel.
Where are the BOROUX Legacy™ water filters manufactured?
The BOROUX Legacy™ water filter was designed in Colorado and is manufactured in China at a renowned, technologically advanced factory.
Where are the BOROUX Foundation™ Black filters manufactured?
Proudly made in the USA! The plastic Stem Saver™ is made in China.
What are the BOROUX Foundation™ Black filters made of?
A special blend of activated carbon.
What are all BOROUX water filter products made of?
- The containers and taps are made from AISI 304 stainless steel, which is food-grade and highly corrosion-resistant.
- BOROUX Foundation™ Black filters are blocks of activated carbon.
- The Stem Saver (holder for the BOROUX Foundation™ Black filters) and the blocking plugs are made from BPA-free, food-safe plastic.
- The sealing rings are made of silicone.
Cleaning, maintenance and storage
How should I store my BOROUX Foundation™ Black filter elements, and what is their shelf life?
Once you’ve used your elements:
The method of storage depends on how long the BOROUX Foundation™ Black filter elements are not in use:
If the filters are not used for 4 to 15 days and you wish to avoid having to prime them again, remove the filters from the water filter, place them in a sealable bag or container, and store them at the front of the fridge to prevent them from freezing. This ensures the filters remain largely saturated (wet), so that re-priming is usually not necessary. If, for any reason, the filters are working more slowly than usual, re-prime them until water droplets begin to form on the outer surface of the filter for 10 seconds.
For long-term storage, we recommend drying the filters and storing them in a sealed container. It is important that they are completely dry before being stored long-term, to prevent any bacterial growth. One way to dry your filters is to leave them on a windowsill for one to three days to air-dry. We also offer a tool to assist with both priming and purging. This is the BOROUX Automatic Filter Primer Pump (electric) or Black Berkey Primer. The advantage of drying (purging) the BOROUX Foundation™ Black filter elements is that they dry very quickly. Once the filters are completely dry, place them in a storage bag, such as a large, sealable bag. The elements are extremely powerful and can absorb odours and smoke from the air. By sealing them in a bag, they cannot absorb odours from the air. When you are ready to reuse the filters, clean them by scrubbing the outside with a scouring pad or a stiff brush. Then prime the filters again, either manually or using the BOROUX Automatic Filter Primer Pump (electric) or the Black Berkey Primer, before putting them back into the water filter.
In theory, the service life of the BOROUX Foundation™ Black filter elements is unlimited.
**Please note that the storage methods listed above apply only to BOROUX Foundation™ Black filter elements.
If you’ve never used the elements before:
If the cartridges are unopened and still in their original packaging, make sure you do not store them in a room with strong odours (such as a utility room or garage). As the elements contain carbon as one of their components, they may absorb odours from the room in which they are stored. For example, if they are kept in a laundry room, they may pick up the scent of strongly perfumed items such as washing powder.
** If you are also storing the top and bottom containers of your water filter, it is best to empty both containers before storing them. Water that stands for a long time encourages the growth and proliferation of bacteria and mould. We recommend washing your water filter with soapy water before leaving it to dry.
How and when should I carry out maintenance on a BOROUX Legacy™ water filter?
Clean the stainless steel containers and the tap once a month using washing-up liquid and warm water.
Clean the BOROUX Foundation™ Black filters every 3–6 months using cold water and a scouring pad.
For more information, please see the manual or the instructional videos in our library.
Tests and results
How do I know if my filters are working properly? – Red dye test
IMPORTANT INFORMATION BEFORE YOU BEGIN
The red dye test is solely intended to check that your water filter has been fitted correctly – so that no water other than that from the stems of the BOROUX Foundation™ Black filter elements is coming through – and that the filters have not reached the end of their service life. There are no independent test results showing the percentage by which the red food colouring is filtered out. No official claim is therefore made that this contamination is reduced. If, therefore, the instructions below are not followed and, for example, a higher concentration of red food colouring or a different type of red food colouring is used, it is likely that it will not be reduced by 100% per cent. It is therefore important to follow the instructions below carefully; this mainly concerns the amount of red food colouring used and ensuring that the test is not carried out more than twice a year.
The BOROUX Foundation™ Black filter cartridges are powerful enough to remove red food colouring from water. By carrying out a red food colouring test, you can be sure that your water filter system is working properly.
GUIDELINES
- We recommend carrying out this test the first time you use the product and then every six months (after cleaning) to ensure that the BOROUX Foundation™ Black filter elements are working properly.
- The red dye test is intended solely for use with BOROUX Foundation™ Black filter elements and NOT for other filter elements (such as fluoride filters, for example) that do not filter out the colouring agent.
- Make sure the colouring is RED. Red food colouring (unlike the other colours) does not contain any minerals, so the element recognises it as a contaminant. Furthermore, do not use natural red colouring (such as beetroot juice, for example), as this is not recognised as a contaminant either. The aim is to use a synthetic red food colouring, so please use the original red food colouring.
- The red dye test must be carried out after the BOROUX Foundation™ Black filter elements have been primed.
CARRYING OUT THE TEST
NOTE: Take a look at our instructional videos for a video showing how to carry out the red dye test.
1. Start with an empty water filter system (top and bottom tanks) and remove any fluoride filters (if fitted).
2. Place only the top container (with the BOROUX Foundation™ Black filter elements installed) on glasses of a similar size (so that the filter stems protrude from the glass). This makes it easy to see straight away which filter passes and which fails the test.
3. In a separate jug, add 3 drops (= 0.15 ml) of food colouring per litre of water and mix (using a small bottle original red food colouring (so you can carry out a full test several times). Pour the red water into the top container until the filters are completely submerged. Please note: Never pour red food colouring straight from the bottle onto the filters or into the top compartment. Always mix the food colouring with water in a separate jug first.
4. Allow the water to filter from the top container into the glasses below. When the glasses are three-quarters full, pour the remaining water out of the top container. Please note: The glasses can be filled at different speeds.
5. Check the water in each glass. It should be clear, with no pink or red tinge. If the water in any of the glasses is red or has a pink tinge, that particular filter may be faulty or worn out. See below.
IF YOU NOTICE A RED COLOUR IN THE WATER, CHECK THE FOLLOWING:
1. Are the wing nuts securely fastened? Do not tighten the wing nuts with tools; they should be tightened by hand until you feel resistance – that is sufficient. If the wing nuts are overtightened, this may damage the thread on the stem and/or the grooves on the wing nut. This may affect the seal. Should this occur, please contact us.
2. Do you use natural red food colouring or a different colour of food colouring? No natural red food colouring is the only type recommended for this test.
3. Is the black ring from the BOROUX Foundation™ Black filter elements also in the upper housing, and is the wing nut tightened at the bottom? If the black ring is on the outside of the lower housing (i.e. directly next to the wing nut), this does not provide a proper seal. Consequently, the test will fail. Place the black ring on the inside of the upper housing and repeat the test.
4. Do the plug caps seal the unused holes properly (where applicable)? Are the plug caps securely fitted so that the hole is actually sealed? For plug-caps with a bolt and nut, there must be a sealing ring on both sides (not just on one side). If the plug-caps are leaking, this will cause the test to fail. Tighten the plug-caps more securely and repeat the test.
5. Are you retesting a filter element that has failed? If so, make sure you rinse this filter element and prime it again before retesting. Also, make sure all the water has been drained from the bottom tray (or glass). If you are using the bottom tray or a glass to collect water, rinse it thoroughly with clean water first. You are now ready to repeat the test.
6. If you have done all of the above and a filter element still fails the red dye test, then contact Get in touch with us. The BOROUX Foundation™ Black filter elements come with a one-year guarantee.
NOTE: Take a look at our iinstructional videos for a video showing how to carry out the red dye test.
What do the readings from a TDS meter tell us?
A TDS meter does not detect much difference between unfiltered water and water filtered using a BOROUX. This is normal, and the reason has to do with what a TDS meter actually measures. According to tdsmeter.com, "Total Dissolved Solids (TDS) is the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water, expressed in units of milligrams per unit volume of water (mg/L), also known as parts per million (ppm). TDS is directly related to the purity of water and the quality of water treatment systems, and affects everything that consumes, lives in or uses water – whether organic or inorganic – for better or for worse.”
This statement is both correct and incorrect. It is correct in terms of what a TDS measurement consists of, namely the “total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water”. It is incorrect in its conclusion that TDS is related to the purity of the water and the quality of the water purification system. If the measure of a water purification system were how close it could bring the water to pure H₂O, then it might be correct. But people need minerals to live. So beneficial minerals in your water are actually a good thing. A high-quality water purification system should filter out substances that are harmful to your body, whilst retaining the beneficial elements such as minerals. BOROUX Foundation™ Black filter cartridges are designed to retain healthy and beneficial minerals in the water whilst removing unwanted heavy metals such as lead and mercury, as well as sedimentary minerals such as iron oxide and aluminium.
So, if you use a TDS meter, you will find that the reading is roughly the same both before and after the water has passed through the BOROUX Foundation™ Black filter elements. And that is exactly right. The BOROUX Foundation™ Black filter elements retain all the beneficial minerals. So, of the substances that a TDS meter will actually detect, the BOROUX Foundation™ Black filter elements will only remove unwanted heavy metals such as lead and mercury, as well as sedimentary minerals such as iron oxide and aluminium. Therefore, the TDS reading will not change significantly, unless there is a substantial amount of heavy metals or sedimentary minerals in your water.
A TDS meter does not measure the level of biological and chemical contaminants (including, for example, chemicals, medicines, hormones, many pesticides and their residues, bacteria and viruses). The most important thing is not to rely solely on a TDS meter to determine whether your water is safe. You can have water with a low TDS reading that still contains harmful bacteria. You can have water with a high TDS reading that is completely safe (e.g. pure, uncontaminated seawater… although you wouldn’t drink it, but that’s only because it’s mineral salt). So make sure you know what a TDS meter actually measures.
My BOROUX Foundation™ Black filter has failed the red dye test – what can I do?
A failed red dye test may indicate that the system has been installed incorrectly. Check the positioning of the wing nuts (on the outside of the upper tank) and washers (on the inside of the upper tank) again.
Refit the filter(s) and run the test again. If it still fails, then contact Join us.
Are the BOROUX Foundation™ Black filters NSF-certified?
The BOROUX Foundation™ Black filters are certified as lead-free to NSF/ANSI/CAN 372. The BOROUX Foundation™ Black filter cartridges are currently being tested for additional certifications. All certification tests are carried out by the Water Quality Association (WQA).
Does the BOROUX Foundation™ Black filter reduce fluoride?
Fluoride is not filtered out by the BOROUX Foundation™ Black filters.
Initial tests with the BOROUX Foundation™ Black filters showed that fluoride was not effectively filtered out. Although fluoride levels were reduced, this was not the case over a large number of litres. True to BOROUX’s core values of transparency, they did not extrapolate data or make false claims. Fluoride is therefore not filtered by the BOROUX Foundation™ Black filters in accordance with their strict standards.
However… with the additional BOROUX Proactive™ Fluoride filters they remove more than 99% of fluoride from the first 1,000 litres. The patented upflow design and dual-layer nano-carbon filtration of this BOROUX Proactive™ Fluoride filters maximise filtration. The fluoride filters, housed in durable stainless steel casings, are compatible with BOROUX Foundation™ Black filters and Black Berkey filters and deliver over 3,500 litres of clean, fluoride-reduced water per pair.
Which contaminants are filtered out by the BOROUX Foundation™ Black filter?
Take a look at the full list with the latest test results.
Laboratory test results for the BOROUX water filter
BOROUX Foundation™ Black filters have been tested by IAPMO R&T Lab NJ, an ISO/IEC 17025-accredited laboratory. See below for the full BOROUX test report:
See all the individual reports below:
- BOROUX Test Report – Chloramine
- BOROUX Test Report – Lead 6.5 pH
- BOROUX Test Report – Lead 8.5 pH
- BOROUX Test Report – Chlorine
- BOROUX Test Report – Uranium, Mercury, Gross Beta, Caesium, 6.5 pH
- BOROUX Test Report – Mercury 8.5 pH
- Testrapport BOROUX – PFAS
- BOROUX Test Report – Chloroform
- BOROUX Test Report – Pharma G1
- BOROUX Test Report – Pharma G2
- BOROUX Test Report – Pharma G3
- BOROUX Test Report – Glyphosate
- BOROUX Test Report – Chromium III, Cadmium, Selenium, pH 6.5
- BOROUX Test Report – Chromium III, Cadmium, Selenium, pH 8.5
- BOROUX Test Report – Chromium VI, pH 6.5
- BOROUX Test Report – Chromium VI, pH 8.5
Test reports are added from time to time. We update this page regularly, but for all the latest laboratory test results for the BOROUX water filter: click here. You will be redirected to the manufacturer’s website, where all the results are listed on a single page. These are the results of all the tests carried out using the BOROUX Foundation™ Black filter cartridges, which are the filter cartridges used in the BOROUX water filter.
Replacement
There’s some white stuff on my filter – what is it?
White residues are mineral deposits. They are harmless and, as far as the black filters are concerned, there is no need to replace them. If they are visible on the black filter, rinse them off under running water and wipe them away. If they are visible on the containers or the tap, scrub them off with a mixture of half water and half vinegar. You can also soak the tap in this mixture.
How long do the BOROUX Foundation™ Black filters last?
The BOROUX Foundation Black filters are designed for long-term use. However, the actual service life of the filters depends on various factors, such as:
● water quality;
● the contaminants present and their concentrations;
● daily water consumption;
● the substances you specifically want to filter out.
BOROUX provides a general replacement recommendation, based on a broad range of users and water qualities. In practice, the optimal replacement interval may vary from user to user.
Based on our experience with Dutch tap water, we recommend replacing the filters after, assuming average usage and the use of tap water, maximum three years. This is a practical guideline and not a fixed replacement period.
If you use water with higher concentrations of certain contaminants (for example, water from other sources), if your water consumption is high, or if you wish to ensure maximum protection against specific substances, it is advisable to replace the filters sooner.
If you want to determine exactly when replacement is needed, only regular analysis of the filtered water will provide a definitive answer.
Please note: Test results and maximum capacities vary depending on the type of contamination. Always refer to the most up-to-date information and BOROUX test results.
BOROUX Proactive™ Fluoride filters
Do I need the stainless steel holder for the BOROUX Proactive™ Fluoride filter?
Yes, the stainless steel housing is essential for good performance. It supports the upflow design, which directs water from the bottom upwards, thereby reducing the flow rate and increasing the contact time between the water and the filter media. This optimised interaction improves fluoride reduction and overall effectiveness.
Do I need one BOROUX Proactive™ Fluoride filter for every BOROUX Foundation™ Black filter?
Yes, you need one BOROUX Proactive™ Fluoride filter for each BOROUX Foundation™ Black filter in your system. The BOROUX Proactive™ Fluoride filters are designed as a one-to-one product, which means that each fluoride filter connects directly to one BOROUX Foundation™ Black filter.
This ensures a balanced flow, good filtration performance and maximum fluoride reduction throughout your entire system.
Where are the BOROUX Proactive™ Fluoride filters manufactured?
Proudly made in the US! So not in China or any other Asian country.
What are the BOROUX Proactive™ Fluoride filters made of?
The BOROUX Proactive™ Fluoride filter consists of two different layers. The inner layer is granulated carbon: small, loose granules of a mixture of different carbons are packed into the centre of the cylindrical filter. The outer layer of the filter is nanocarbon. This mixture of specialised carbon is moulded into shape.
How long do the BOROUX Proactive™ Fluoride filters last?
The filter’s service life varies depending on the water source (the quality of the water going into it) and usage. It is recommended that filters be replaced after 3,750 litres, which is approximately 6–12 months.
Do the BOROUX Proactive™ Fluoride filters reduce arsenic?
No tests have yet been carried out for arsenic.
How do the BOROUX Proactive™ Fluoride filters work?
The first filtration stage takes place when the water passes through the proven BOROUX Foundation™ Black filters through activated carbon. The BOROUX Proactive™ Fluoride filter is screwed onto the shaft of the BOROUX Foundation™ Black filter and secured in place. The second stage of filtration takes place as the water flows through the dual-action BOROUX Proactive™ Fluoride filter.
After the water has passed through the filters in the upper chamber, it first comes into contact with the inner layer of the highly efficient granulated carbon filters in the lower chamber. The water then filters through the patented nano-carbon outer layer. Thanks to the patented Upflow design of the stainless steel housing, the water remains in contact with the outer layer for an extended period, ensuring superior filtration. The filtered water leaves the housing via the outlet holes at the top. This ensures that virtually the entire surface of the fluoride filters is utilised evenly, from bottom to top.
Are BOROUX Proactive™ Fluoride filters compatible with my existing Berkey system and filters?
Yes, the BOROUX Proactive™ Fluoride filters are designed to be fully compatible with Berkey water filters. They are attached directly to the Black Berkey filters and therefore sit in the lower chamber, just like Berkey’s fluoride filters. This allows you to continue using your existing Berkey system whilst benefiting from BOROUX’s advanced fluoride-reducing technology. They will, of course, also fit into the housings of other brands’ gravity-fed water filters, provided that Black Berkey filters or BOROUX Foundation™ Black filters are used.
Do you need help checking compatibility? Please get in touch with us!
Why does my water have a slight taste when I first start using the BOROUX Proactive™ Fluoride filters?
You may notice a subtle earthy or mineral-like taste when you first use your new BOROUX Proactive™ Fluoride filters. This is completely normal and temporary.
These filters use high-quality filter media which may initially impart a mild taste. To prevent or resolve this, we recommend priming each filter for at least 10 minutes using higher water pressure before installing them. It is also important to use warm water (around 38 °C). In tests, this method has resolved the taste issue in 100% of cases.
For the most effective priming, use the blue silicone primer supplied with the filters or the BOROUX Automatic Filter Primer Pump (electric). These help to rinse the filters thoroughly and ensure that your water tastes great right from the start.
BOROUX Automatic Filter Primer Pump (electric)
What happens if a filter isn’t primed properly?
Incorrect priming can lead to cloudy water, a lower flow rate, uneven filtration and a shorter filter life. The primer pump ensures consistent, correct priming for optimum filter performance.
Does the use of the BOROUX Automatic Filter Primer Pump reduce the service life or performance of the filter?
On the contrary, using the Primer Pump results in a comprehensive and consistent priming guaranteed, which extends the service life of your filter and optimises its filtration performance.
Is the BOROUX Automatic Filter Primer Pump compatible with Berkey filters?
Yes. The Primer Pump is compatible with Black Berkey filters and BOROUX Foundation™ Black and BOROUX Proactive Fluoride filters (adapter supplied with fluoride filters).
Is the BOROUX Automatic Filter Primer Pump watertight?
No, the Primer Pump is not waterproof. Do not completely submerge the Primer Pump in water.
What do the different lights on the Primer Pump mean?
The light on your primer pump gives you a quick indication of the current battery status. Here’s what each colour and the way the light flashes mean:
Solid green: fully charged and ready for use
Flashing green: charging
Flashing red: Battery level is below 25% – please charge soon
Steady red / no light / empty: Battery is almost flat – needs charging immediately
If you’re not sure whether the pump is working properly, we recommend that you charge it fully and check the indicator light again.
How many filters can I prime with a fully charged battery?
With a fully charged battery, you can use it for at least 10 filters prime it before you need to recharge the pump.
It takes about 90 seconds to fully prime a single filter.
BOROUX glass drinking bottle
What grade of stainless steel is the cap made from?
The cap is made of high-quality stainless steel (304).
Is the BOROUX glass drinking bottle dishwasher-safe?
Yes, the BOROUX glass water bottle is dishwasher-safe, but the stainless-steel cap should only be washed by hand.
Do any chemicals from the bottle end up in my water?
BOROUX glass water bottles can be reused repeatedly without any harmful chemicals leaching into the water. The cap is made of stainless steel both inside and out and features a silicone seal. With the BOROUX glass drinking bottle, you can enjoy the convenience of plastic without putting your health at risk.
Can I use my BOROUX glass water bottle for hot drinks?
Although borosilicate glass is resistant to temperature changes (as it does not expand in the same way as ordinary glass), we recommend using the BOROUX glass drinking bottles for cold drinks only.
What is borosilicate glass usually used for?
Borosilicate glass has a wide range of applications. It is often used in cookware and laboratory equipment, but also in high-quality products such as optical lenses, implantable medical devices and aerospace equipment. It is also a popular material amongst artists, such as glass sculptors.
Is borosilicate glass unbreakable?
Although it is not completely unbreakable, it is more durable than ordinary glass. The base of the BOROUX glass drinking bottle is approximately 300% thicker than that of competing bottles to prevent breakage. If broken, borosilicate glass tends to shatter into large pieces rather than shatter into small fragments (it is more likely to break than to shatter).
What is the difference between borosilicate glass and ordinary glass?
Borosilicate glass is a higher-quality type of glass that is stronger, more durable and, above all, more resistant to cracking and thermal shock.
Is the BOROUX Move Sleeve dishwasher-safe?
No, the Move Sleeve must only be hand-washed.
Can I use the Move Sleeve for both hot and cold drinks?
Absolutely! The sleeve is vacuum-insulated to keep drinks hot or cold for a long time.
You can BOROUX glass drinking bottle to use in your Move Sleeve to cold drinks Keep it cold for a long time. Keep the ice frozen all day.
Borosilicate glass is resistant to temperature fluctuations (as it does not expand in the same way as ordinary glass). We recommend only using the Move Sleeve for hotter liquids if you place the glass water bottle inside the Move Sleeve first before pouring the liquid in, as the glass will be very hot.
I’ve got a white silicone ring with my Move Sleeve – where should I put it?
The white silicone ring is designed to be placed at the bottom of the Move Sleeve to stabilise the bottle. However, not all bottles require a ring; it is mainly there if the bottle sits a little loosely in the Move Sleeve. If you’re having problems with the thread at the top, try adjusting or removing the ring to see if that solves the problem.
Does the BOROUX Move Sleeve come with a water bottle?
No, the Move Sleeve is sold separately and is designed for the BOROUX 500ml glass drinking bottle.