History:
Vented central heating system.
Dec 03. Central Heating flushed with Sentinel liquid and each radiator
removed and flushed outside (lots of sludge etc). Refitted with TRVs.
Sentinel inhibitor added.
Early 04. CH flushed again (just clean water came out I think) and boiler
replaced. Sentinel inhibitor added.

Now that I'm coming up for 1 year since inhibitor was added I wanted to
check whether the inhibitor is at the correct concentration. I tried
bleeding the system the other day and nothing was required - water came out
immediately and it was perfectly clear. From this I suspect that everything
is okay - although I shall drain some water off into a jam-jar and leave a
nail in it and see if it rusts.

Is there anything else I can do to check whether I need to top up the
inhibitor? I've not been able to find any test stuff to actually check the
concentration which I've heard people talk of before.

Thanks

David

In message , David Hearn
writes
I've not been able to find any test stuff to actually check the
concentration which I've heard people talk of before.

Look on this page

http://www.bes.ltd.uk/products/108.asp

for item

7583 Test Kit for X 100

Will that do?

--
dave @ stejonda

http://costofwar.com/

dave @ stejonda wrote:
In message , David Hearn
writes
I've not been able to find any test stuff to actually check the
concentration which I've heard people talk of before.

Look on this page

http://www.bes.ltd.uk/products/108.asp

for item

7583 Test Kit for X 100

Will that do?

Quite possibly, although at £8.15 + VAT it seems rather pricey considering
it costs nearly as much as a tub of X100 anyway! Why not just add more
inhibitor and be done with it?

Anything else available cheaper?

Thanks

David

On Fri, 14 Jan 2005 14:38:58 +0000, David Hearn wrote:

dave @ stejonda wrote:
In message , David Hearn
writes
I've not been able to find any test stuff to actually check the
concentration which I've heard people talk of before.

Look on this page

http://www.bes.ltd.uk/products/108.asp

for item

7583 Test Kit for X 100

Will that do?

Quite possibly, although at £8.15 + VAT it seems rather pricey considering
it costs nearly as much as a tub of X100 anyway! Why not just add more
inhibitor and be done with it?

Anything else available cheaper?

Try "Purimachos" brand inhibitor available from Screwfix (£3.59 inc VAT
IIRC).

--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html