Inhibitor in central heating system

[shd1970]

Is there a way of checking the level of inhibitor in my central heating system ?

I had 2 large radiators fitted approx 18 months ago and the plumber said that 1 can of Fernox that i saw him spray into the upstairs bathroom radiator would be more than enough, when he refilled the system

I have had to top up the system a few times since (i need to keep a record of when i know so i can decide if i have a leak somewhere !) so was just wondering if you can have too much in the system ?

Its a worcester greenstar combi btw

Thanks in advance

 

[PrenticeBoyofDerry]

You can buy test kits and you cannot overdose.
The amount of F1 would depend on the volume of water in your CH system.
Obviously if you keep having to top it up, the solution is being diluted if still active. And topping up regularly would suggest you are losing it from somewhere.