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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. S

    System Chemical Flush Best Practice

    My first post here, looking for some advice. I've just had my boiler replaced with a worcester 4000 combi boiler. The engineer put chemical flush and inhibitor in when filling up, ran the raditors hot and then tested using a strip. And has left both in saying this is safe, and standard...
  2. gmartine

    Best chemical sink unblocker?

    Which make is fairly foolproof? I tend to almost always go down the mechanical unblocking route but I want to leave a few bottles for a few tenants (not mine).
  3. CorgiDirect

    Fernox MEGA Chemical and Filter Clearance Sale

    Fernox MEGA Chemical and Filter Clearance Sale. View Full Range Here - https://www.corgi-direct.com/mega-fernox-clearance-sale-18253-0000 Fantastic Prices. Excellent Savings. Order Today While Stock Lasts
  4. T

    Chemical and/or Power Flush?

    Some more plumbing advice, please. I am getting a new boiler installed and this includes a Hot and Cold Chemical Flush of the system. Do I also need a Power Flush or is the Chemical Flush sufficient?
  5. CorgiDirect

    Chemical Clearance Sale Now Open to All - Be Quick. While Stock Lasts (Sold on Pallets)

    Amazing Chemical Clearance Sale We are selling off the following Pallets of chemicals reduced to clear Part Number: C004300 Product: SAFEGUARD EXTRA 200 1 LTR QTY: PALLET OF 280 Only 3 Pallets left Only £100 ex VAT each pallet (0.35p ex VAT for each chemical) Part Number: C004301 Product...
  6. CorgiDirect

    BIG Descaler & Leak Sealer Chemical Pallet Clearance Sale - You wont get a better price! , View this post for info while stock lasts

    Amazing Chemical Clearance Sale We are selling off the following Pallets of chemicals reduced to clear Part Number: C004300 Product: SAFEGUARD EXTRA 200 1 LTR QTY: PALLET OF 280 Only 3 Pallets left Only £100 each pallet (0.35p for each chemical) Part Number: C004301 Product: SAFEGUARD...
  7. B

    Is powerflush really any better than chemical plus mains flush? (before boiler repair)

    Hello, BEFORE I cleaned the system last year with a mains flush. There was a little inky stuff and a bit of sludge at the very end when I emptied out the rad I took off the wall, but no rads have ever had cold patches. Most pipes are hep20 but I had small section replaced by copper 2 years ago...
  8. CorgiDirect

    Forum Only Offer - MASSIVE Chemical Clearance Sale £0.50p!!

    MASSIVE Chemical Clearance Sale - While Stock Lasts!! Important Information Chemical Clearance Stock The following products are old stock and maybe dusty. These products have been massively reduced to clear and are sold as seen There are no returns on these products Products listed are...
  9. CorgiDirect

    MASSIVE Chemical Clearance Sale , Only £0.50p each. Hurry While Stocks Last

    Your the first to know about this Important Information Chemical Clearance Stock The following products are old stock and maybe dusty. These products have been massively reduced to clear and are sold as seen There are no returns on these products Products listed are - Safeguard Extra...
  10. Plumbase Spares

    My Chemical Romance - Fernox F1 Protector & F3 Cleaner, a Match Made in Heaven

    My Chemical Romance Here, Claire Lopez Marketing Manager at Fernox explores the relationship between chemical water treatment and in-line system filters – and why they should always be used in combination. The use of high-quality chemical water treatment and in-line system filters is widely...
  11. B

    Powerflush Required following new Boiler Install and Chemical Flush

    Good evening, Please can I ask for some brief advice. Last month I had installed a new boiler (Ideal 18kw) by a national firm. It's a townhouse with 4 floors, 10 heaters, a hot water cylinder and also a tank in the attic. The heaters look in good condition and have been retained from the...
  12. CorgiDirect

    Adey Magnaclean Professional 2 Chemical Pack Only £72.99 ex vat BEST PRICE

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  13. D

    Best chemical flush?

    I've been using Fernox F3 and on occasion Sentinel X400 to chemically flush out old 8mm microbore heating systems. I've had mixed results with both products, although they generally do the job. I'm thinking of trying the fast acting stuff Sentinel X800, on a very old and never cleaned 8mm...
  14. CorgiDirect

    Best Price Online Adey Magnaclean Professional 2 Chemical Pack Only £79.00 ex vat

    Only £79.00 ex vat BUY HERE Servicing your heating system shouldn’t be difficult, and it’s even easier when you are using one of the fastest filters on the market – the Magnaclean Professional 2 Filter and Chemical Pack from Adey is the product for you. When using the Magnaclean Professional...
  15. I

    Best Blockage clearing Chemical product

    Hi Guys, What would you recommend as the best/ favourite drain cleaner for clearing domestic drains and is it a different one for commercial ones? I know that a snake is probably the first item to go to but what really gets rid of fat, soap and/or hair (gag) from slow draining systems...
  16. Stanios

    How do you hang a radiator on a crumbly/lath plaster wall?

    Hi everyone, I am confronted with crumbly wall, the sort that doesnt hold rawl plugs in. Managed to hang all but one rad and made a right mess of the wall on the last 1. Now can stick my finger in the wall. Its a thick wall, going to the job tomorrow and thinking of trying again by moving the...
  17. M

    Circulating chemical flush additive without heating on

    My Potterton Profile boiler will soon be 20 years old and for some years British Gas has been shaking its head about spare parts being available, though at the last service the engineer did admit to carrying the most needed on his van. (I've just Googled "Potterton Profile spares" and it would...
  18. A

    Draining down - Add Chemical cleaner whilst at it?

    Hi Guys, I am doing some work the pipes soon so will be draining down my system (combi bolier). My question is.....While im draining it down, shall I first add some cleaning product e.g Sentinel x400 system restorer? We recently bought the house and believe the boiler is 6ish years old and...
  19. T

    Best way to chemical flush heating.

    Got a customer asking me to try chemical flush heating rather than a powerflush to save money.... currently has a logic combi with magna clean. was thinking drain down refill with x800, open all rad valves fully then get the heating on full for a few hour cycles. Leave it it a week then...
  20. T

    Drain unblocking chemical

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