Question 1

Hi, Is this Fernox F1 a 500ml bottle that is concentrated to cover a full central heating system typically with 12 radiators?

Accepted Answer

No.  Fernox F1 comes as either a 290 ml bottle of Superconcentrate that you can add via a filling point at a radiator (e.g. the bleed valve) OR in a 500 ml bottle that you can either pour into a radiator (if you have a sealed system) - or via the header tank - as you refill your system.  The 500 ml bottle dilutes to serve a 3 - 4 bedroom house and a capacity of 100 litres.  Fernox's site doesn`t mention the number of radiators but I believe my last bottle said 8 - 10 radiators ???  I also understand that a Double panel radiator counts as TWO radiators.... so buying two bottles would be best, a worthy product. Try the few nails in jam jar of tap water and few nails in jar of system's diluted mixture (catch some as you bleed your rads) and note the results after a few days, the Fernox ones will be shiny still, the others' rusted. This will also re-assure you that you have a strong enough mix for your sized system...... .  Repeat test annually and just top up with new once mix starts to shows discoloured nails.  Simple, easy, re-assuring and cheap.  Bottom line, Fernox F! is a GREAT product and one that I credit with keeping my previous boiler running for some 30 years with the ONLY repair being a replacement pump. Hope this helps.

Question 2

how to add it to the heating

Accepted Answer

Check out the U Tube videos on how to add Fernox F1.  Very easy via a heated towel rail.

Question 3

Is this the new or the old formula, how many litres will it treat 100ltrs or 130ltrs ?

Accepted Answer

This is the new formula & will cover a system up to 100L typically a 3-4 bedroom house

Question 4

Label say expiry date ?  Or manufacture date ?

Accepted Answer

The label displays the manufacture date. The shelf life is 5 years.

ASIN	B003HQ97E4
Best Sellers Rank	3,623 in DIY & Tools ( See Top 100 in DIY & Tools ) 24 in Central Heating System Accessories 56 in Pumps & Plumbing Equipment
Brand Name	Fernox
Contains Liquid Contents?	Yes
Country of Origin	United Kingdom
Customer Reviews	4.7 4.7 out of 5 stars (2,168)
Global Trade Identification Number	05014551565999, 05698292057540
Included Components	1 x Fernox 56599 F1 500 ml Protector
Item Form	Liquid
Item Type Name	F1 500ml Protector
Item Volume	500 Millilitres
Item Weight	499 g
Manufacturer	Fernox
Material Features	Natural
Material Type Free	Acid Free
Model Number	56599
Number of Items	1
Part Number	56599
Scent	Almond
Size	500 ml (Pack of 1)
Special Features	Removes limescale
Specific Uses For Product	Indoor use only
Surface Recommendation	Metal
Unit Count	500.0 millilitre

Fernox 56599 F1 500 ml Central Heating Protector

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