Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Pat Purcell on November 14, 2007, 01:46:42 am

Title: DI systems
Post by: Pat Purcell on November 14, 2007, 01:46:42 am: How many on here run just a di system (di ing water straight from the tap) and what is your tds
Just looking for the person with the highest TDS from tap that runs a di only and how much resin you use to purify how much water
Title: Re: DI systems
Post by: windowwashers on November 14, 2007, 08:24:52 am: Quote from: Pat Purcell on November 14, 2007, 01:46:42 am
How many on here run just a di system (di ing water straight from the tap) and what is your tds
Just looking for the person with the highest TDS from tap that runs a di only and how much resin you use to purify how much water
Pat add a poll to this post, di or ro, I would be intersted to know how many aswell ;)
Title: Re: DI systems
Post by: john tomkins on November 14, 2007, 09:32:09 am: Pat just use this....

The calculations are
20000 multiplied by litres of resin, divided by TDS into resin = Litres of pure

For me with 2 x 750mm containers of resin and 5 TDS into resin (from RO)
20000 x 1.5/5 = 6000 ltr of pure
Title: Re: DI systems
Post by: Dave hook on November 14, 2007, 10:31:22 am: If your just running water through a di use 2 di vessels instead of 1 this way resin lasts longer and the tds will read 0ppm. On rare occasions i do this if ive no water in tank and a custy wants a con roof doing or summat. You can pick up a new di vessel for about £30 on ebay
Title: Re: DI systems
Post by: DASERVICES on November 14, 2007, 05:33:12 pm: DI only , TDS 34
Title: Re: DI systems
Post by: windowwashers on November 14, 2007, 05:52:15 pm: RO and di TDS 472 >:(
Title: Re: DI systems
Post by: D.Salkeld_Ltd on November 14, 2007, 09:52:12 pm: RO and di TDS 280 - 300.

Mind you, since Louth flooded the TDS dropped to about 180 ;)

David
Title: Re: DI systems
Post by: macmac on November 15, 2007, 12:00:07 am: 2 x DI only tap tds = 096ppm

tony
Title: Re: DI systems
Post by: gary999 on November 15, 2007, 08:27:31 am: di only tds 48ppm :)
Title: Re: DI systems
Post by: Sanity on November 15, 2007, 12:15:27 pm: RO + DI. Tap TDS = 360
Title: Re: DI systems
Post by: Captain Scarlet on November 15, 2007, 01:07:51 pm: di only with a ppm/tds of 34
Title: Re: DI systems
Post by: easy on November 15, 2007, 06:05:58 pm: RO + DI. Tap TDS = 447 .........here in Essex
Title: Re: DI systems
Post by: zeusjazmin on November 15, 2007, 09:25:09 pm: di only reading is 24
Title: Re: DI systems
Post by: dai on November 15, 2007, 09:41:09 pm: DI only, two vessles in tandem, costs £1 a day with 57 TDS
Title: Re: DI systems
Post by: Pat Purcell on November 15, 2007, 09:43:12 pm: Thanks for the responses, It looks like TDS of about 100 is where people start to find an R/O more practical
Title: Re: DI systems
Post by: ian m on November 16, 2007, 05:46:16 pm: Hi Pat

I do 2 days work a month where I use water that is tds 160

I use about 4--5 litres of resin over these days

Hope this helps

Ian
Title: Re: DI systems
Post by: Jon-scwindows on November 16, 2007, 09:53:40 pm: i have only been using my 300gpd Ro unit, the tap tds is 250 ish or less- but when filtered- comes out at 16 or 17 ppm and this has been fine- the windows still dry spotless, i will start using DI resin soon though to bring it right down to 000 just to be sure.