[paul moss]

Taken from ask a scientist



Question -   Why do white cotton socks seem to
get cleaner in hot water than in cold water?
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!Hi Camille
White socks, eh? Usually white socks used with
tennis shoes get quite dirty

Neil is there anything you want to share with 

[michael toomey]

cleaning with heat cant be beat,thats what i was told some years ago on a training course

[Buckland]

Here is some 'science' which Hydramaster quote on their site - I would have liked to see some US university quoted as the source but I dont believe they do actually offer a source but you've got to admit it reads well and is fairly easy to remember:

"It is a scientific fact that the hotter the water the better; for every 18 degrees fahrenheit rise in temperature over 118 degrees fahrenheit,  chemical activity doubles. This continues until you reach a temperature of approximately 250 degrees fahrenheit. This happens with virtually any cleaning chemical."

[Simon@arenaclean]

There are folks that insist 200 degrees+ is the only way to clean, others who use M-Power or Nemisis or micro-splitters/detergent free who rinse with cold water and insist it is the way to go. I had a bit of time recently so tried M/S & Nemisis and powerburst on a really dirty greasy pub carpet, My machine has drop in pipes so it was easy to switch between cold and hot water, by the way hot as in 50 degrees or tap hot if you will. Neither M/S or Nemisis touched it rinsing with either hot or cold. Powerburst rinsed with acidic rinse at 50 degrees Powerburst did out perform others even with a cold rinse but it was no where near as good. Agitation used in each test 250 psi. Am I right to consider my test as definative. NO. I can't get the results others claim but I don't discount their experiences, different strokes for different folks. Try it both ways and make your own judgement. I still use M/S and Chemspecs DFC on certain domestics that don't require higher Ph cleaners, normally wool or blends with moderate soiling and with good results, DFC i've found has the edge. Pre Spray Gold still does the business too. After years in this business i'm still trying new techniques and solutions but I find it's best to try it yourself, that's what makes it interesting