The TF1 Omega Filter out performs other filters of its size by collecting significant quantities of system contaminants, and competes with many larger filters thanks to the cleverly designed internal mechanisms of the filter.

The HPS technology improves the overall collection of the filter, as well as the performance of the Neodymium magnet.

No, the TF1 Omega Filter has been designed to ensure that even when it reaches a level of maximum collection, system water can still pass through the filter, short-circuiting the body, and flowing freely through the manifold.

The TF1 Omega Filter is not only compatible with all Fernox products, it is designed to act as a dosing point for any Fernox Express products.

In circumstances where demineralised or softened water is used a quality inhibitor must be present to prevent corrosion from taking place. The TF1 Omega Filter offers a convenient and fast way of introducing an inhibitor into the system with no mess or fuss.

The TF1 Omega Filter collects all types of corrosion, scale and installation debris.

By preventing these contaminants from circulating within a heating system, energy efficiency levels are optimised and the inconvenience of a system breakdown coupled with a major repair or replacement cost can be avoided.

The TF1 Omega Filter is a high performance, nickel plated, in-line system filter, which is designed for domestic heating systems.

It is produced with quality materials and components and has been manufactured using precision engineering. Combining the strength of a powerful Neodymium magnet with Hydronic Particle Separation technology, the TF1 Omega Filter offers a superior collection capacity for both magnetic and non-magnetic debris.

Protector + Filter Fluid should only be used in combination with an in-line system filter, which can trap and contain the debris in the system before safe removal.

It is ideal for use in circumstances where a system has previously been cleaned or flushed but subsequently has not been adequately protected so further corrosion has taken place. It is also suitable for systems with poor design or low flow rates which make conventional cleaning difficult. Protector + Filter Fluid enables ongoing purging and collection of system debris. Treatment levels should be checked annually as part of a maintenance and service programme to ensure full protection.

Yes, Fernox Boiler Noise Silencer F2 is designed for use with any Fernox Protector.

It should be left permanently in the system with Protector F1 or Protector + Filter Fluid and replaced or topped up at the same time.

This is an innovative, universal inhibitor package which uses the proven inhibition qualities of Fernox Protector F1 with an active dispersant.

This unique formulation is designed to detect, lift and deliver magnetic and non- magnetic debris to an in- line system filter.

Fernox Protectors are suitable for use on systems of all ages. However, it would be  advantageous to clean and flush the system with Fernox Cleaner F3 to remove  sludge before adding the Protector F1.

Alternatively, the universal Fernox Filter Fluid+ Protector can deliver sludge and debris to an existing in-line filter or a newly installed TF1 Filter, whilst protecting the system against further corrosion formation.

Fernox Cleaner  F3 should ideally circulate around the system for at least one hour, or up to a week, after which it should be drained out and the system flushed/ cleaned before adding Fernox Protector F1 or Protector + Filter Fluid together with a Fernox TF1 Filter to protect the system from further corrosion and scale formation.

Yes, all Fernox internal leak sealers, such as Fernox Leak Sealer F4, are safe for use with combination and other low water content boilers.

They will not block valves or vents. Leak Sealer F4 Express is recommended for all pressurised systems as this can be added in 30 seconds via a radiator, filling loop or Fernox TF1 Filter, without the need to drain the system.

One litre of water weighs 1 kg, therefore 2 kg of DS40 System Cleaner per 100 litres of system volume will make a 2% solution.

You should only drain central heating system water into the foul water drain or a septic tank.

Never drain system water into road drains or rain water gullies as these go directly into rivers. Never pour water from a central heating system onto the garden or lawn.

Normally a treatment will last the life of the system but an annual check to determine whether further dosing is necessary is recommended.

If the system is drained, it will need to be re-treated with a further full dose of Protector. You can check if the system is properly dosed using a Fernox Protector Test Kit.

No, overdosing is not detrimental to the system. It is important to ensure that sufficient Protector is present in the system.

There is a test kit and a postal testing service to check the Protector concentration. Refer to Protector Test Kit product data sheet for further guidance.

One bottle of Fernox Protector F1 or Protector + Filter Fluid will treat a typical system of ten single panel radiators – double panel radiators, count as two radiators.

If the calculated dose rate is in between pack sizes, dose to the higher figure.

Boiler noise results from localised boiling of the water. This happens when the inside surface of the boiler becomes too hot due to scale or baked- on sludge deposits.

All systems over five years can suffer noise and new boilers in old systems are especially vulnerable. Add Fernox Boiler Noise Silencer F2 and / or de-scale the boiler with Fernox DS40 System Cleaner and protect with Fernox Protector F1 or Protector + Filter Fluid.

The following guide to estimating system volumes has been developed, based on field experience. Commercial systems (pressurised):

Multiply the boiler output rating in kWs by the figure detailed below (for the relevant type of system) to give an estimate of the total system volume. Allow an additional 10% (multiply by 1.1) for open vented systems of all types.

Useful conversion factors:

Domestic systems:

• The domestic system volume can be estimated by counting the number of single panel radiators in a property and multiplying by 10
• Remember to count double panel radiators as two single panels
• It is also important to consider thermal stores, which can add up to 100 litres to system capacity

The following guide to estimating system volumes has been developed, based on field experience. Commercial systems (pressurised):

Multiply the boiler output rating in kWs by the figure detailed below (for the relevant type of system) to give an estimate of the total system volume. Allow an additional 10% (multiply by 1.1) for open vented systems of all types.

Useful conversion factors:

Domestic systems:

• The domestic system volume can be estimated by counting the number of single panel radiators in a property and multiplying by 10
• Remember to count double panel radiators as two single panels
• It is also important to consider thermal stores, which can add up to 100 litres to system capacity

Leaks in water systems can result from external frost damage, dry solder joints, accidental perforation during maintenance or decoration, or internal corrosion.

Sealing internal leaks (central heating systems only)
Small leaks, including pressure drops on combination boilers and other sealed systems, can be repaired using Fernox Leak Sealer F4. Each Leak Sealer F4 product treats 100 litres or up to 10 single radiators.

On an open vented system, pour the Leak Sealer F4 into the tank and simply draw off 5-10 litres of water from the drain cock initially returning this to the header tank to ensure that no treated water is thrown away. Repeat the previous step until all Leak Sealer F4 has been absorbed into the circulating system.

Switch on the circulating pump and apply at least a small amount of heat to achieve even distribution.

An alternative solution for dosing is to inject Fernox Leak Sealer F4 Express or Fernox Superconcentrate Leak Sealer F4 directly into the radiator via the bleed valve.

Repairing external leaks (to all types of water pipes)
To repair leaking external pipes and fittings, use Fernox LS-X External Leak Sealer with a bandage of PTFE tape or another suitable reinforcement tape.

After turning off the water and draining down to remove water pressure from the leak, apply Fernox LS-X External Leak Sealer to a dry surface around the area of leakage. Wrap the pipe with a layer of PTFE tape or other reinforcement tape with 50% overlap and extend well beyond the area of the leak.

Immediately apply repeat coats of Fernox LS-X External Leak Sealer and further layers of bandage to form a repair about 5mm in total thickness before allowing to cure.

Soft and hard limescale on radiator walls can drastically reduce their ability to heat rooms efficiently. The problem often revolves around the boiler heat exchanger where the temperature is hottest, but deposits in radiators and pipework also lessen the effectiveness of the whole system.

It is therefore important to consider the whole central heating system when checking and establishing why its efficiency has dropped.

What causes fuel wastage?
There are two main forms of deposits found in heating systems:

Part L of the Building Regulations for England and Wales 2006 states that new all wet central heating systems should be pre-commission cleaned and treated with a central heating inhibitor. The correct method for inhibiting a central heating system is explained in a British Standard Code of Practice BS 7593:2006. If the cleanliness of a central heating system is maintained from the start, its life span can be extended as well as design efficiency optimised. However, if the efficiency of an existing system has been reduced due to a lack of cleaning or insufficient inhibition protection, remedial action should be taken. Fernox Cleaner F3 and Fernox Powerflushing Cleaner F5 are both designed to recondition systems and are particularly effective if the system is contaminated with black iron oxide sludge. Fernox DS40 System Cleaner should be used if limescale deposition is evident. However, it is important to note that cleaning or descaling will never fully restore the heating system to its original condition. After cleaning, the system should be protected against further corrosion or scaling by using Fernox Protector F1 or Fernox Protector MB-1, or in systems where a system filter has been installed, Fernox Protector + Filter Fluid can be used.

• In hard water areas, limescale forms mainly on the hottest surfaces. Low water content and tubular boilers are particularly prone. High skin temperatures can attract lime even from relatively soft waters, but these are unlikely to cause limescale problems. However, temperature is not the only factor that can promote limescale deposition. The design of components or choice of material and surface finish can all increase or decrease the probability of scaling. As modern condensing boilers have far narrower flow channels in the heat exchanger than older cast iron boilers, less deposition is required to cause noticeably detrimental effects to system performance. Limescale deposition that affects system performance can begin from waters containing as little as 100ppm of hardness.
• Black iron oxide sludge is produced continuously in all untreated installations, even in the near absence of air or dissolved oxygen, mainly due to electrolytic corrosion. If there are higher levels of dissolved oxygen (perhaps because of an aeration fault) it compounds the problem. Iron oxide is five times heavier than water and settles in areas of reduced flow such as radiators.

As well as wasting fuel, these deposits cause other problems such as boiler noise and component failure, notably relating to circulator pumps and boiler heat exchangers.

Part L of the Building Regulations for England and Wales 2006 states that new all wet central heating systems should be pre-commission cleaned and treated with a central heating inhibitor. The correct method for inhibiting a central heating system is explained in a British Standard Code of Practice BS 7593:2006.

If the cleanliness of a central heating system is maintained from the start, its life span can be extended as well as design efficiency optimised. However, if the efficiency of an existing system has been reduced due to a lack of cleaning or insufficient inhibition protection, remedial action should be taken.

Fernox Cleaner F3 and Fernox Powerflushing Cleaner F5 are both designed to recondition systems and are particularly effective if the system is contaminated with black iron oxide sludge. Fernox DS40 System Cleaner should be used if limescale deposition is evident. However, it is important to note that cleaning or descaling will never fully restore the heating system to its original condition. After cleaning, the system should be protected against further corrosion or scaling by using Fernox Protector F1 or Fernox Protector MB-1, or in systems where a system filter has been installed, Fernox Filter Fluid+ Protector can be used.

Follow these steps to successfully dose your central heating system.

Make sure the system is turned off and allow radiators to cool down (1). Select a radiator and shut both the wheel-head and lock shield valves (2). If a thermostatic radiator valve (TRV) is fitted, close it by turning it to the minimum setting.

Having removed the air vent pin using a cloth to absorb any escaping water (3). Screw the Fernox Express injection nozzle into the air vent (after cutting to the right diameter to fit tightly (4)). Fit the tube to the adapter and screw onto the canister. Attach the other end of the tube onto the nozzle in the radiator (5).

Re-open the wheel-head valve (6) (or TRV) and inject all the content of the Fernox Express by squeezing the trigger for 30 seconds (7). After the product has been dispensed close the wheel-head valve (8) (or TRV), remove the injector nozzle and tighten the air vent pin (9). Open both radiator valves, turn on the central heating system (10) and let it run for 15 minutes to allow the Express to disperse around the system.

Fernox Express can also be for dosed via the system filling loop using the appropriate special adapter supplied with the Express product as well as via the bleed valve on a fitted Fernox TF1 Filter. The whole process takes less than two minutes.

The damaging effects that limescale can have on the lifespan of a boiler and the energy efficiency of a central heating system are significant.

Part L of the Building Regulations stipulates that where mains hard water exceeds 200 ppm, feed water to water heaters and the hot water circuit of combination boilers must have a scale reducing device fitted.

Why is descaling important

Limescale prevention
An effective method of treating water to avoid the build-up of limescale is to install an in-line Fernox Scale Reducer. An Electrolytic Scale Reducer will provide whole house protection, while a Magnetic Scale Reducer is suitable for single appliances. Both products can be easily connected directly onto 15 mm or 22mm horizontal or vertical pipe work using compression fittings or 15mm horizontal or vertical pipework using 15mm pushfit fittings.

Limescale removal
Where limescale has already formed it can be removed from a hot water system, including the storage cylinder, immersion heater, pipework and taps using Fernox DS-3 Cleaner.

After turning off the boiler and/or immersion heater, tie-up the ball valve or isolate the mains water supply to the cold water storage tank. Then open all hot water taps before draining the entire system, and close the taps again afterwards.

Having dissolved the Fernox DS-3 in warm water at the maximum concentration of 1kg per 10 litres of water, introduce the solution into the cold water storage tank either via a funnel connected to rubber or plastic tubing or directly, if the cold water storage tank serves the hot water cylinder only. Refill the system until the water level in the cold water storage tank just covers the cylinder feed connection. After this is done, turn on the boiler and/or immersion heater and heat the acid solution in the hot water cylinder to 50-60°C. Maintain this temperature for at least four hours, opening all hot water taps briefly every 10-15 minutes to allow a half to one pint (284 to 568ml) of acid solution to run into a plastic container. Finally, turn off the boiler and immersion heater, and drain the hot water system completely, bailing out any residual water from the cold water storage tank.

Release the ball valve of the cold water storage tank and thoroughly rinse the entire hot water supply system, opening all hot water taps. Where applicable the cold water system should also be rinsed, as some acid may have entered via the cold water storage tank. Any waste solutions of DS-3 Cleaner should be neutralised with Fernox System Neutraliser before discharging to the drain.

Corrosion occurs when a refined metal reverts back to its natural ore state. Corrosion in water systems takes place when two areas of metal with a different electrical charge are in contact or linked via a conductor such as water.

Corrosion occurs when a refined metal reverts back to its natural ore state. Corrosion in water systems takes place when two areas of metal with a different electrical charge are in contact or linked via a conductor such as water.

What should be done?
An inhibitor should be added to system water to reduce the rate at which corrosion takes place. To determine the existing level of protection simply use the Fernox Protector Test Kit to measure the concentration of inhibitor within the system for an instant on-site result.

Over and under-dosing with inhibitors
Although manufacturers specify a recommended dose rate for their product, it is important to find out how a product performs when over or under-dosed. Anodic passivating products will require a sufficient dose to ‘coat’ the internal surfaces of the system, plus some excess to maintain this film. If the dose is below the level required to achieve sufficient protection, exposed areas of metal will continue to corrode. Over-dosing with anodic inhibitors is unlikely to have any detrimental effect.

Negative impact of contaminants
However, corrosion inhibitors will not be fully effective if under-dosed, but will have a partially protective effect. Negative impact of contaminants The presence of contamination by flux residues, existing corrosion sludge, residual cleaning agent, or even washing-up liquid may adversely affect the performance of an inhibitor and lead to corrosion. To make sure an inhibitor performs as effectively as possible, it is advisable to clean the system thoroughly before treating. the Fernox Water Test Kit, the Fernox F3/ F5 Cleaner Test Kit or the Total Dissolved Solids (TDS) Meter can be used to check that a system has been adequately cleaned and flushed before an inhibitor is added.

Systems should be cleaned when commissioning a new system or installing a new boiler within an existing system. The purpose of cleaning and flushing is to remove mineral oil, harmful flux residues and installation debris which can cause corrosion.

Cleaning existing systems removes magnetite (black iron oxide), haematite (red iron oxide) and limescale improving the circulation and reducing fuel wastage and boiler noise.

New systems domestic 
Fernox Cleaner F3 or Fernox Powerflushing Cleaner F5 should be added before commissioning the system. Simply circulate Fernox Cleaner F3 or Fernox Powerflushing Cleaner F5 for at least one hour when the boiler is switched on, after which the system should be drained and thoroughly flushed until the water runs clear.

Existing systems domestic
Ideally the system should be powerflushed to remove any existing treatment, sludge and contaminant. Fernox Cleaner F3 or Cleaner F5 should be added to system water and circulated hot for at least one hour after which the system must be drained and flushed until the water runs clear. The cleaning time can be extended to up to one week for systems which suffer from hardened iron oxides and limescale.

For both new and existing systems, a Fernox TDS Meter should be used to ensure efficient flushing by comparing the readings of the system water and mains water. The system is thoroughly flushed if the readings are within 10% of each other.  Alternatively, the Fernox Cleaner F3/F5 Test Kit can be used to determine the level of cleaner residues remaining in the system.

Protecting new and existing systems
In accordance with Part L of the Building Regulations, after cleaning with Fernox Cleaner F3 or Fernox Powerflushing Cleaner F5, add Fernox Protector F1 with the final fill water for long-term protection against corrosion and limescale.

All Fernox Protector/Inhibitor products are compatible with commonly used metals in central heating systems, including aluminium, and are suitable for use with plastic pipework. For continued protection, check Protector/Inhibitor levels annually using the Fernox Protector Test Kit or the Fernox System Health Check postal service and top up product level as required.

Boiler noise is usually the result of limescale deposition within the heat exchanger of a boiler. This condition is worsened if magnetite is also present in the system, as this combines with the limescale to form a much harder deposit.

Boiler noise is usually the result of limescale deposition within the heat exchanger of a boiler. This condition is worsened if magnetite is also present in the system, as this combines with the limescale to form a much harder deposit. Other sediment forming debris such as sand and brick dust entering the system during installation can also become part of the hardened deposit. Local water conditions also play an important part, particularly the scale-forming solids dissolved in the supply water.

Boiler noise is directly related to the rapid condensation or implosion of steam in water. Localised boiling develops on the surface of the deposit, and small steam bubbles are created that make a rattling noise as they leave the surface and travel around the system.

When installed into existing systems, new boilers can become excessively fouled soon afterwards by oxide sludge present in the system water. Replacing a boiler can disturb soft sludge and loosen sediment in other parts of the system, causing these contaminants to be transported by the system water and re-deposited in the new heat exchanger.

The same phenomenon can occur as a result of circulator replacement if flow rates change. The risk of sediment and sludge deposition in new boilers can be avoided by cleaning the system as part of the installation process. Guidance on correct cleaning and treatment can be found in BS 7593:2006 Code of Practice for Treatment of Water in Domestic Hot Water Central Heating Systems.

What should be done?

Fernox Boiler Noise Silencer F2 is specifically formulated to significantly reduce boiler noise by reducing the surface tension of the system water. The reduced surface tension prevents large bubbles from being able to form and so the associated noise is greatly lessened.  Fernox Boiler Noise Silencer F2 efficiently treats the effects of a noisy boiler until the causes can be treated with a full clean of the system.

Fernox DS40 Descaler and Cleaner selectively dissolves scale deposits without attacking the metals commonly found in central heating s62486ystems. However this acid-based cleaner should only be used in new installations or in systems less than 10 years old.

Older systems that have been untreated for periods of time may have existing leaks that are temporarily plugged with corrosion debris. Installations with a history of radiator corrosion failures should not be acid cleansed, as other radiators are likely to have deep corrosion pits or complete perforations.

Older installations can be substantially improved, however, by dispersing the sludge with Fernox Cleaner F3 or Fernox Fernox Powerflushing Cleaner F5, followed by powerflushing with plain water.

After removing all soft sludge from older installations, separate boiler de-scaling may be helpful to resolve the problem. In order to do this, all the radiators should be isolated after which the system can be descaled with Fernox DS40 System Cleaner over a period of time – up to 24 hours.  This process should be followed by neutralisation with Fernox System Neutraliser before powerflushing with plain water.

Algae in feed and expansion cisterns Leathery skins or films of algae on the surface of expansion cisterns in open vented systems are caused by fungal mould growths. It occurs when the expansion cistern is not properly covered causing dust, insects and spores to be able to enter the water.

Algae in feed and expansion cisterns
Underfloor heating systems are also susceptible to microbial growth due to the lower temperatures at which these systems operate.

Gas in the system
Microbiological fermentation in a system could result in flammable gas. Methane gas, which burns with a blue flame, is most often found.Hydrogen sulphide (emitting a ‘bad egg’ smell) may also occur, and is associated with the presence of corrosive sulphate-reducing bacteria.

Bacterial or yeast infestations caused by organisms entering the system from the supply water; debris in new systems or through air contact in open expansion cisterns can also occur.

What should be done?

To combat algae in open vented systems, empty the cistern and disinfect with Fernox AF-10Biocide or Fernox LP Sterox. Refill the tank, adding the correct dose of AF-10 Biocide (refer to the instructions on the container)and top up the concentration levels of Protector F1. Ensure the tank is fitted with a purpose-made lid to prevent future contamination of the tank.

When there is gas in a system,use Fernox AF-10 Biocide to control microbiological growths and prevent gas build-up. Where contamination is significant,several repeat doses of biocide may be required: in such situations, it may be appropriate to drain and retreat the entire system.

Bacterial contamination in air and ground source heat pumps
When there is bacterial contamination in air and ground source heat pumps, Fernox HPCleaner can be used.

Before use, it should be diluted using no more than 600 litres ofmains water per one litre of HPCleaner (equivalent to 600 metres of 40mm pipework). The ground collector must be flushed out with fresh mains water before being filled with the diluted product.Having circulated the HP Cleaner for at least one hour, after whichit should be flushed out until thewater runs clear. Fill the ground collector with Fernox HP-5 /HP-5c or HP-15 / HP-15c depending on the level of frost protection required.

Minerals in chalk or limestone rock collect as water permeates through the ground and collects in aquifers. These minerals remain within the water and are carried into the domestic water supply.

What causes limescale deposition?
They inevitably reach central heating and water systems, where they build-up over time to cause blockages in pipework, efficiency losses and the premature failure of components. These problems can arise in both the primary water system (the central heating system) and secondary (household hot water) system.

The mineral deposits, collectively known as limescale, consist primarily of calcium and magnesium carbonates which are generally insoluble. Limescale occurs when these deposits are formed as a result of heating water that contains soluble bicarbonate salts (which are thermally unstable and break down to form carbonates).

There are several factors that contribute to the build-up of limescale, including:

• High (temporary) hardness
• Elevated pH (alkalinity) of the water
• Elevated temperature

What should be done?
Prevention is always better than cure. In central heating systems, the addition of any Fernox Protector F1 will prevent deposition of limescale.

For domestic hot water systems, Fernox offers a range of scale reducers designed to provide either whole house or single appliance protection.

For whole house protection, the Fernox Electrolytic Scale Reducer should be installed on to the mains water supply to the property. To protect single appliances such as the boiler, the Fernox Magnetic Scale Reducer is ideal.

If the central heating system is already contaminated with limescale it should be cleaned using an acid-based cleaner such as Fernox DS40 Descaler & Cleaner. However, descaling alone will not restore the central heating system to its original condition. After descaling it is imperative to protect the system against further scaling by adding any Fernox Protector F1 or if a system filter is fitted Fernox Protector + Filter Fluid

If limescale formation has occurred within the hot water system, individual appliances such as kettles, showerheads and heat exchangers can be descaled using Fernox DS-3 Limescale Remover. For open vented systems Fernox Superconcentrate Limescale Preventer is an ideal way to keep system water scale-free.

Disinfection is a process which destroys or irreversibly inactivates micro-organisms, reducing their numbers to a safe level.

Its purpose is to leave a clean water supply. It must be carried out in the following circumstances:

• During routine annual system maintenance
• New installations n After major system extensions or alterations
• After installing underground pipework, except localised repairs which require prior disinfection of components
• Where it is suspected that contamination may have occurred: i.e. fouling by sewage, or if systems have been inspected or repaired
• Where a system has not been in regular use nor regularly flushed

What should be done?
Fernox offers a silver catalysed hydrogen peroxide treatment, Fernox LP Sterox.

Fernox LP Sterox
This product treats a wide spectrum of biocidal activity including all water-borne bacteria and viruses. It is particularly valuable in modern water system hygiene management where more conventional treatments such as chlorination are unsuitable. Fernox LP Sterox is supplied in one litre bottles. This will treat 300 litres of system water. After treatment, it is not critical that Fernox LP Sterox is flushed from the water supply as it naturally decomposes to water and oxygen.

Water should be run from each outlet and tested with a Fernox LP Sterox Test Strip until the concentration in the water is less than 200ppm.

It is an easy to use dip strip that tests central heating systems for the correct concentration of inhibitor, to ensure that the system is fully protected and sludge and debris is prevented from forming and building up.

A core requirement under BS 7593:2019 is that central heating systems are tested annually, to help maintain system health and to identify and rectify any issues before they cause damage to the system. The Benchmark Commissioning Checklist further supports this practice to evidence the correct servicing and installation of boilers. The onsite Express Inhibitor Test makes compliance with these industry standards easy.

Simply dip the test strip into the system water and it will instantly change colour. By comparing the test strip to the colour chart label on the bottle, installers can assess whether the system water includes the correct concentration of inhibitor. A fully protected system will have inhibitor levels of 100ppm or above – and will pass the test. However, if the test fails and a result of less than 100ppm is received, the system should be re-dosed.

Yes! the Express Inhibitor Test is a universal test that will check for the presence of all molybdate based inhibitors within the system water.

The results are instant!

If the dip test shows less than 100ppm, installers can immediately resolve the issue by adding a high-quality inhibitor such as Fernox Protector F1 or where a filter is fitted, Protector+ Filter Fluid. The test can be re-taken once the inhibitor has circulated to confirm the level has been met.

With the initial dose, its key to make sure the system water is circulated properly so that the inhibitor is sufficiently mixed. Fernox recommend that you let the system circulate for at least 15 minutes. Also having the system on hot will help speed this up.

It’s easy to keep track of test results with the free to download Fernox Water Test App, which installers can use to manage and evidence each test. Using the in-app camera, users take a picture of the test strip and select its colour to generate the pass or fail result. Using this process will auto-generate a PDF certificate with the result to your email address and this acts as evidence that the test has been completed and the system is fully protected. For ease, all of your submissions will be stored in your account for you to view and export on demand. If a test fails, installers can also demonstrate that action has been taken and the system subsequently re-tested to receive a positive result.

BS 7593:2019 recommends that the inhibitor should either be re-dosed at 5-year intervals or, a more comprehensive laboratory test is conducted every five years to provide a more in-depth analysis, and where needed, establish targeted action to resolve issues and restore system efficiency. The Fernox Water Quality Test includes everything needed to take a sample of the system water and send it off to the Fernox laboratory for full analysis.

The Fernox Express Inhibitor Test is available from all major merchants and online plumbing retailers.