Fernox MB-1 Protector 4Ltr Product Code: 97287

4Ltr. Gives long-term protection of domestic central heating systems against internal corrosion and limescale formation. Prevents corrosion of all metals and is suitable for use on all types of boilers, radiators and pipework systems. Non-toxic.


  • 1 Year Guarantee


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Safety Data Sheet
Additional Information
Technical Specification
  • Brand : Fernox
  • Sealant Adhesive Volume : 4 Ltr
  • Product Type : Protector
  • Volume : 4 Ltr
  • Model No : MB-1
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery service up to 3 working days: €8.95

Free delivery on all orders over €70.00

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Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


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€37.95 Incl. 23% VAT

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Fernox MB-1 Protector 4Ltr is rated 4.7 out of 5 by 31.
Rated 5 out of 5 by from Good Product Having used other products and been disappointed it was good that I found this one. It has kept the system clean and noise levels area reduced.
Date published: 2018-07-15
Rated 5 out of 5 by from Fernox MB1 Used it for over 40 years, always lives up to its reputation
Date published: 2018-06-28
Rated 5 out of 5 by from An excellent protector I used this on my first and only heating system and after many years the circulating liquid remained clear and solid free. After a few alterations and expansions to the system over the years including partial liquid top ups I used Fernox F1 subsequently. However it did not appear as good as the MB 1. I have a chemical background and I have checked the specs for both and I believe the MB 1 is better and as demonstrated by my experience. I think it is a case of you get what you pay for.
Date published: 2018-01-31
Rated 5 out of 5 by from Central Heating Protection Brilliant product, easy to use no problems and would definitely recommend
Date published: 2017-10-24
Rated 5 out of 5 by from Easy to order, fast delivery !! I bought some Fernox water treatment Chemicals. Easy to put order, fast delivery. Very good experience buying from you, will for sure order more in the future.
Date published: 2017-10-08
Rated 5 out of 5 by from Fernox Have used Fernox for over 30 years in several Boiler/heating systems - always keeps system in top order and never had problems with sludge or corrosion.
Date published: 2017-09-13
Rated 5 out of 5 by from Best protector made Have used this for many years in my central heating system to protect my boiler pump and radiators which are now 30 years old no sludge build up good value
Date published: 2017-08-20
Rated 5 out of 5 by from the best you can get Have always used this in my heating system for as long as I can remember, keeps the system in tip top condition worth the money.
Date published: 2017-07-24
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