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chemical

A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be simple substances, chemical compounds, or alloys. Chemical elements may or may not be included in the definition, depending on expert viewpoint.Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucrose). However, in practice, no substance is entirely pure, and chemical purity is specified according to the intended use of the chemical.
Chemical substances exist as solids, liquids, gases, or plasma, and may change between these phases of matter with changes in temperature or pressure and time. Chemical substances may be combined or converted to others by means of chemical reactions.

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  1. T

    Drain unblocking chemical

    I am not a drain specialist by and means. What's the best drain unblocking chemical
  2. D

    Chemical Flushing ....

    Are there any risks to the pipe work / joints when undertaking a chemical flush (as opposed to a power flush) prior to installing a boiler - could this these chemicals cause / lead to leaks? As always any advice would be much appreciated. (I have just edited the post slightly - essentially I...
  3. M

    Power flush or chemical

    Hi all, after some advice on the parents ch system, iv been plumbing for years and working in the industry for a bit, work with electric and water now but have installed as few systems but never done any thing with poor circulation problems, the system seems to be blocked, its a 12 YO boiler (WB...
  4. T

    Chemical Drain Unblocker

    Not a tool as such, but which is the most effective chemical drain unblocker? I've always used one shot but is there anything better?
  5. A

    Radiators keep getting pin holes in them.

    Hi guys, Had to go and replace a radiator this afternoon, it's the second one I have done there in 3 months and I believe a couple more were replaced before that. Some were only 6 months old. The customer had a flush done within the last 2 years and says the problem has got worse since. I...
  6. A

    New Combi Boiler - Powerflush vs Chemical Flush

    I'm going to get a new Combi-Boiler installed, but the installer (which I must use as its under a government scheme) has said they will only Chemical Flush the system, not Power Flush before installation. Would this be sufficient? And would this cause warranty problems - I was looking to get a...
  7. M

    Kettling noise from boiler...using Fernox F2?

    I'm currently running some Fernox F3 round my system. Its 14 year old vented system, Ideal Classic boiler and has never had any kind of powerflush or chemical treatment. It's been noisy with air/?hydrogen for a while now so trying the chemical route. No cold spots at bottom of rads just air/gas...
  8. M

    Home made CH chemical injection pump

    Instead of paying out for expensive aerosol chemicals for central heating systems why not use a pump to inject the cheaper standard chemicals? There's no need to pay out a fortune to buy one. A cheap garden sprayer and a couple of fittings will do the trick. Take one garden sprayer, one 10x15...
  9. A

    failed boiler pump and chemical cleansing

    I am not a plumber, and I really need some advice. I have Worcester Bosch Greenstar 24i junior which is only 2 years old, yet its pump already failed. A Worcester engineer who fixed it (the boiler is still under the guarantee) said it was due to the dirty water, and indeed the pump was...
  10. B

    New Bath chemical smell

    Hi, I have just bought a new bath and have had it sitting in the bathroom for the past week. There is a really strong chemical smell coming from the bath to the extent that we have to keep the door shut and the window open. Please can someone advise if this is normal and if and when the smell...
  11. J

    Heeeeeeeeeeeeeeeeeeelp!!!!!!!!!!

    Power flushed a system today, upstair 15mm, down stairs 10mm, problem = downstairs radiators cold/ luke warm. I power flushed system, used boiler to heat water as per usual, all radiators got warm, finnished power flush, and went to fire up, still not heating fully, couldn't get circulation...
  12. C

    Chemical treatment before fitting combi

    What is the correct treatment to use on a conventional heating system (inc microbore) before fitting a new combi What is the appropriate chemical - not sure if it should be X400 or X800 What do other use? X400 - System Restorer - A non-acid treatment for cleaning older heating systems...
    • cascas
    • Thread
    • before chemical cleaner combi fitting heating radiators system systems treatment
    • Replies: 0
    • Forum: Plumbing Jobs | The Job-board
  13. S

    Does fitting a Magnaclean professional unit do away with the need to powerflush/

    or chemical clean of the whole system? Sorry - I didn't know where to post this. I have been comparing quotes for replacing our boiler. Most say it will need a chemical clean or power flush to clean out the old system ( I assume radiators - ours are old) if only for warranty purposes. One...
  14. B

    plate to plate descale

    hi as anyone got any ideas whats best to descale a removed plate to plate . i cant seem to get acid based descalers now from merchants .whats the best product.ben told brick acid does same job
Creating content since 2001. Untold Media.

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