[jsm]

Just reading this on the Brodex site , the latest news letter bit -- mmmmmm RIP L5 heaters lol


Hot or Cold ?
Is Hot water the best for cleaning?
You do not wash the dishes at home with cold water do you? Nor do you wash the dishes at home without detergent therefore it is not the hot water alone that clean them. Brodex have spent 1000’s of pounds researching the cleaning power of pure water and have concluded that it is the structure of the pure water, it’s self that does the cleaning not the temperature of the water, this has little effect.

In 2007 a leading resin supplier warned the industry that Hot de-ionised water could actually be corrosive and detrimental to some framework because oxygen will leave the water at high temperatures resulting in a higher concentration of dissolved carbon dioxide which increase it’s acidity. Brodex advice in stubborn dirt scenarios is to either pre-treat with detergent or double clean to avoid costly law suits due to damage.
REASONS NOT TO USE HOT WATER
• Can crack the glass
• Unnecessarily high running costs
• Extremely high initial outlay
• Increase leaks on machines
• Increases the corrosiveness of the
water
• Is an expensive gimmick

[Jeff Brimble]

What if you replace the RO?DI with pure rainwater ?

[steven ainger]

this has been posted loads of times,
guess who doesnt supply hot wfp units

[chrisyg]

Funny, id like to see this "research" i bet its made up as per usual..

Ionics sell a hot system and they say its the best - so yeah,

the ones who dont sell it say it rubbish and corrosive with nothing to back that claim up apart from hear-say

and another who does sell it tells you its the best..

REASONS NOT TO USE HOT WATER
• Can crack the glass - if your an idiot who put it on too hot
• Unnecessarily high running costs - Nope.. made up fact
• Extremely high initial outlay - Nope.. made up fact
• Increase leaks on machines - Yes, so you need hot seals - simple fix
• Increases the corrosiveness of the
water - Really? - Please back that up with evidence
• Is an expensive gimmick - Nope.. Brodex are an expensive gimmick!

[tomy jackson]

yes it has , so shuve it whear the dont shine not you but bodex , most woodent go back to cold

[mikethechamois]

thats an interesting article, brodex obviously believe it or they would just simply supply hot water systems as well

they dont state what frames exactly are prone to corrosion, steel frames perhaps

over what period of time would it take them to noticably corrode

given a choice would you wash up in cold water or hot

when i wash glasses i run them under the hot tap before putting them on the drainer

my local washes their glasses with very hot water

would the oxgen in the hot water being more active make it clean better

it would help if they stated which frames may be prone to corrosion as you would know then to do them with cold or simply avoid the jo b


scaremainering

[[GQC] Tim]

Anyone has got a little bit of knowledge on chemistry knows exactly why  hot water cleans better then cold. Sure pure water does it's job as well, but that's half the truth.

[Alex Gardiner]

I'm sure that Brodex (or the resin manufacturer) have got their chemical facts right.

However whilst this may be the fact in the laboratory, in reality there are far more things in the environment that will be corrosive to window frames than a little hot water.

[chrisyg]

when i wash glasses i run them under the hot tap before putting them on the drainer

my local washes their glasses with very hot water

Yes you are supposed to rinse away the detergent with hot "running" water after you have washed them, it prevents bacteria build-up.

[mikethechamois]

hi chrisy

i didnt know the reasons behind it

im just doing as im told

as usual

[macmac]

This whole "pure water" thing makes me laugh. Here's a list of some things that have been stated on this forum about it.

1. It's sterile
2. It's corrosive
3. It puts holes in your t-shirts
4. It strips pollish from car body work
5. It rots van floors
6. It rots wooden window sills

These are just a few of what I can think of for now. But, we have people collecting rain water from roofs that only reads 005ppm   So to me, what's the difference?  does 5 parts per million realy make all the difference?

Tony

[telboy]

Funny, id like to see this "research" i bet its made up as per usual..

Ionics sell a hot system and they say its the best - so yeah,

the ones who dont sell it say it rubbish and corrosive with nothing to back that claim up apart from hear-say

and another who does sell it tells you its the best..

REASONS NOT TO USE HOT WATER
• Can crack the glass - if your an idiot who put it on too hot
• Unnecessarily high running costs - Nope.. made up fact
• Extremely high initial outlay - Nope.. made up fact
• Increase leaks on machines - Yes, so you need hot seals - simple fix
• Increases the corrosiveness of the
water - Really? - Please back that up with evidence
• Is an expensive gimmick - Nope.. Brodex are an expensive gimmick!

You obviously have a hot water system

[dd]

This whole "pure water" thing makes me laugh. Here's a list of some things that have been stated on this forum about it.

1. It's sterile
2. It's corrosive
3. It puts holes in your t-shirts
4. It strips pollish from car body work
5. It rots van floors
6. It rots wooden window sills

These are just a few of what I can think of for now. But, we have people collecting rain water from roofs that only reads 005ppm   So to me, what's the difference?  does 5 parts per million realy make all the difference?

Tony

2, 3 and 6 are accurate. I don't know why but it is more corrosive than rain water. Some hinges on glazed doors will go rusty with pure water but don't with normal exposure to rain. Pure water has made holes in my cotton t-shirts.

Also hot pure water is more acidic because it has a higher level carbon dioxide (I don't understand the science). Hot pure water must be more agressive to achieve its superior cleaning results - why else would bird poo and snail trails disolve far more easily?

[WCE]

Just reading this on the Brodex site , the latest news letter bit -- mmmmmm RIP L5 heaters lol


Hot or Cold ?
Is Hot water the best for cleaning?
You do not wash the dishes at home with cold water do you? Nor do you wash the dishes at home without detergent therefore it is not the hot water alone that clean them. Brodex have spent 1000’s of pounds researching the cleaning power of pure water and have concluded that it is the structure of the pure water, it’s self that does the cleaning not the temperature of the water, this has little effect.

In 2007 a leading resin supplier warned the industry that Hot de-ionised water could actually be corrosive and detrimental to some framework because oxygen will leave the water at high temperatures resulting in a higher concentration of dissolved carbon dioxide which increase it’s acidity. Brodex advice in stubborn dirt scenarios is to either pre-treat with detergent or double clean to avoid costly law suits due to damage.
REASONS NOT TO USE HOT WATER
• Can crack the glass
• Unnecessarily high running costs
• Extremely high initial outlay
• Increase leaks on machines
• Increases the corrosiveness of the
water
• Is an expensive gimmick

LOL I wonder where they got that from? Sounds to me like the crap tucker poles or whatever they are called now used to say.

[alanwilson]

I can assure you that hot water is much more corrosive than cold water - can't remember exactly but the pH of boiling water is normally around 4, acidic.

As alex G has stated there are other things in the environment much more corrosive but its a stand that Brodex have taken, they could sell Hot water systems just as anyone else can - but they don't.

As for the pub cleaning glasses with hot water, its not going to damage the glass is it?  Glass is an incredibly inert material unaffected by acidic or alkaline solns.

I'm not saying hot water will ruin frames and sills - I'm just saying it could.

[matt]

This whole "pure water" thing makes me laugh. Here's a list of some things that have been stated on this forum about it.

1. It's sterile
2. It's corrosive
3. It puts holes in your t-shirts
4. It strips pollish from car body work
5. It rots van floors
6. It rots wooden window sills

These are just a few of what I can think of for now. But, we have people collecting rain water from roofs that only reads 005ppm   So to me, what's the difference?  does 5 parts per million realy make all the difference?

Tony

yes of course it does

it turns the water into a sterile corrosive hole putter in of t-shirts and van floor wooden window sill liquid

[mikethechamois]

i phoned a friend

hes a scientist in the car industry dealing with car corrosion proofing

he knows all about reverse osmosis and de ionisation

the way he has explained it to me is

you put de ionised water into a battery and charge by running an electrical current through it, this works by speeding the molecules up which creates carbon dioxide .
this raises the acidity of the water creating sulphuric acid

the more you agitate these molecules he stronger the acid

sulphuric acid can be used to clean steel as it strips the oxide off the surface and if you put a block of ali in sulphuric acid it will dissolve the metal

raising the temperature of the water speeds up the molecules raising the acidity of the water creating a weak sulphuric acid

so there you go ...................brodex do have something, which is probably why they are not suplying hot water systems

[luther1]

If you Google 'is hot water more corrosive than cold', then Brodexs' point is proven.

[ftp]

Holes in T shirts! Just imagine the damage if you got pure water in your eyes.  :

[martindrz400]

ive also spoken to someone about this subject to a lecturer at cambridge i know and this theory only applies when the water is very hot the temp you use heated wfp systems at would hardly make any differance from a science lecturer at cambridge uni