Identifying inhibitor used in CH

Is there any way to tell which inhibitor has been used? I have heard if you mix different types, it may actually make a corrosive mixture.

Bob

Reply to
Bob Smith (UK)
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Or, indeed, is there a way to measure the *strength* of the inhibitor - to determine whether it needs topping up or renewing?

Reply to
Set Square

I know there are testing kits available (A similar thread has a link to a fernox kit), but you still need to know the inhibitor that was used to buy the correct kit.

Bob

Reply to
Bob Smith (UK)

An in my thread earlier (for X100), the X100 tester kit was over £8 + VAT, and I can get X100 for around £12 or so. Seems almost better sense to just put in more X100 rather than test.

D
Reply to
David Hearn

X100 seems to be about £12 per litre. Is a litre enough for most systems?

Reply to
Set Square

Its okay for an 'average' house - which ours is (3 bed semi with around 9 radiators). I think they quote a system volume and estimate of how many rads that equates to.

David

Reply to
David Hearn

One reported way (not tried by me) is to drain a little out and put a clean nail in it. If it forms a rust layer in a few days, then the inhibitor is too weak. I assume this would need to be done in a sealed container or it will absorb oxygen from the air and use up the inhibitor that way anyway.

Reply to
Andrew Gabriel

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