Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Pope vader on September 28, 2011, 04:34:36 pm

Title: tds of hot and cold
Post by: Pope vader on September 28, 2011, 04:34:36 pm

does any one know whay the tds of my hot is higher than my cold, if i run them throught my di,  the flow of the hot is slower than the cold, as cold is mains pressure

Title: Re: tds of hot and cold
Post by: [GQC] Tim on September 28, 2011, 09:33:32 pm

Pretty certain DI resin isn't meant to be used with hot water.

Title: Re: tds of hot and cold
Post by: Nathanael Jones on September 28, 2011, 10:47:34 pm

Your TDS meter measures the conductivity of the water & hot water is more conductive than cold so gives a false high reading.

Title: Re: tds of hot and cold
Post by: Pope vader on September 28, 2011, 10:51:53 pm

so would it be fine to use

Title: Re: tds of hot and cold
Post by: Andy Prittchard on September 28, 2011, 10:53:01 pm

Yes, only if you add isopropanol.

Title: Re: tds of hot and cold
Post by: Nathanael Jones on September 28, 2011, 10:55:15 pm

Quote from: ORI on September 28, 2011, 10:51:53 pm

so would it be fine to use

Yep.
You can test it to be doubly sure by leaving a cup of it cool & testing again,.. the TDS will rise a couple of points from contamination in the cup & dust in the air etc, but when cold it should settle back to near 000.  ;)

Title: Re: tds of hot and cold
Post by: [GQC] Tim on September 29, 2011, 12:06:39 am

Interesting, didn't know that. :)

Title: Re: tds of hot and cold
Post by: dave f on October 01, 2011, 07:32:36 am

mmmm interesting ive just got a hot wash my  so just incase it gose up where do get the isopropanol how much do you add to 350ltr

Title: Re: tds of hot and cold
Post by: Mike #1 on October 01, 2011, 07:41:26 am

all this hot wash talk surely you must have a notice on your van saying you are carrying a gas cylinder , and the van must be ventilated   some how

Title: Re: tds of hot and cold
Post by: dave f on October 01, 2011, 07:57:00 am

already got a sticker on van first thing i did as pointed out buy a pal who is a gas safe fitter ;)