Fernox PROTECTOR ALPHI-11 5 Litre

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Fernox PROTECTOR ALPHI-11 5 Litre

SKU: 4528

Estimated Delivery:

5 to 8 Working Days ✝FREE
Orders placed before 1pm are processed the same day, delivery times are between 8am & 6pm Monday to Friday, all deliveries require a signature, for delivery instructions please use the notes section during checkout.
Please see below for Items you will also require for this product.

Availability: In stock

Regular Price: £59.00

£43.89 (inc VAT)

✝ Subject to stock availability. UK Mainland only. Delivery fees and times to Northern Ireland, Scottish Highlands & Isles, Isle of Man, Isle of Wight, Isles of Scilly, and the Channel Isles may vary. Deliveries are made during working days only.

Product Description



Fernox PROTECTOR ALPHI-11 5 Litre


Product Features

  • Protects against corrosion and limescale
  • Maintains efficiency so extending system life
  • Prevents bacterial contamination
  • Compatible with all metals and materials commonly used in heating systems
  • Non-toxic, environmentally friendly
  • Combined antifreeze and protector
  • Protects heating, chilled water and solar systems 
Product Uses 

Fernox Protector Alphi-11 is a combined antifreeze and inhibitor, which gives long term protection of domestic central heating systems against internal corrosion and limescale formation. It prevents corrosion of all metals found in these systems, i.e. ferrous metals, copper and copper alloys and aluminium. It is especially recommended for use in solar systems. Fernox Protector Alphi-11 is compatible with all metals and materials commonly used in central heating systems. For continued protection we recommend Protector levels are checked regularly (annually). The concentration of the product can be easily measured on site using a Fernox Protector test kit. 


Physical Properties  

Fernox Protector Alphi-11 contains mono-propylene glycol. 

Colour: Colourless 

Odour: Mild 

Form: Clear liquid 

pH (conc) 5.7

Technical Information

Additional Information

SKU 4528
Manufacturer ID 603071


Here at TradePlumbing.co.uk we have voluntarily extended our returns period to 90 days, as we understand that sometimes there may be the odd item left over from a project or you may have an unexpected delay to a project meaning that you need the added peace of mind when ordering products in case a return is necessary.

We truly believe in being able to offer customers a flexible service and this extended period allows us to go that little extra to help you when in need, as long as goods are returned in the same condition as received we are happy to help.

To return any time initially please email your request to our Customer Support team at customerservice@tradeplumbing.co.uk along with your TP - Order Reference, please allow at least 1 working day for response and we will take it from there.

To View our complete Return Policy Click on Return and Refunds