Is Fernox registered with the Information Commissioner’s Office (ICO)?
Yes, Fernox is registered with the ICO. A copy of our registration certificate can be found here. This is renewed every 3 years to ensure our compliance with data protection laws and regulations.
What should the appearance be of the water inside a heating system?
The appearance of the water inside a heating system can give insights into the system’s health and whether it is functioning properly. Ideally, the water should meet these characteristics: Ideal Appearance: Clear or Slightly Tinted: The water should generally be clear or slightly tinted if treated with corrosion inhibitors or other additives. Some systems use […]
What is pH within a heating system, and why is it important?
In a heating system, pH refers to the measure of how acidic or alkaline the water within the system is. It is an important parameter because the pH of the water can significantly affect the performance, longevity, and efficiency of the system. Why pH Matters in Heating Systems: Corrosion Prevention: If the water is too […]
Does the Express Inhibitor Test check for all inhibitors?
Yes! The Express Inhibitor Test is a universal test that will check for the presence of all molybdate based inhibitors within the system water.
What is the Fernox Express Inhibitor Test?
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.
What happens if I cannot use the app to submit my sample?
Please note that submitting your samples is only possible through the mobile app. Unfortunately, there are no alternative submission methods available.
How can I access the reports once the test is completed?
Once the test is completed and submitted, you will receive an email with the result PDF attached, including submission details, recommendations, and conclusions. Additionally, you can access all your submitted samples and reports directly from your account at any time.
How do I log out?
To log out, click on the profile icon and then select ‘Sign Out’
How do I log in to the app?
To log in to the app, simply open it and enter your email address and password. For a step-by-step guide, click here.
How can I keep a record of the pass / fail for each job?
It is very 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 […]



















