Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Chris Cottrell on August 07, 2006, 09:19:52 pm

Title: TDS calculation
Post by: Chris Cottrell on August 07, 2006, 09:19:52 pm
Q.whats the calculation for determining how many ltrs you get from 25kg of resin

I forgot ;D

Chris
Title: Re: TDS calculation
Post by: DASERVICES on August 07, 2006, 10:33:04 pm

  Chris,

  Hopefully will have the true calculation tomorrow.

  Doug
Title: Re: TDS calculation
Post by: Paul Coleman on August 07, 2006, 11:32:24 pm
Quote from: Chris Cottrell on August 07, 2006, 09:19:52 pm
Q.whats the calculation for determining how many ltrs you get from 25kg of resin

I forgot ;D

Chris
500,000/TDS or so they tell me.
Title: Re: TDS calculation
Post by: jeff1 on August 08, 2006, 12:05:52 am
Its not what you wanted but think you will find it interesting

http://www.cleantech.co.uk/tdscalc.htm
Title: Re: TDS calculation
Post by: alpha on August 08, 2006, 06:17:36 pm
Just tried that website. I think there calcultion is to get you to buy RO unit. I use DI it costs me £15 a month there calculator says it should cost me £45. It is a hazy guide
Title: Re: TDS calculation
Post by: jeff1 on August 08, 2006, 06:21:50 pm
Hi alpha

that calculator must be way out then, I would contact cleantech and tell them, anyone else tryed it?
Title: Re: TDS calculation
Post by: Clear Vision on August 08, 2006, 07:57:32 pm
Yes I have used it jeff and works fine. ::)

Matthew
Clear Vision
Title: Re: TDS calculation
Post by: freshwater on August 08, 2006, 08:25:46 pm
Basic calculation is 20,000 parts (TDS) per litre of resin.

eg a bag of 25 litres will remove 20,000 x 25 = 500,000 parts (TDS). Therefore water at 100ppm you will get 500,000/100 = 5000 litres OR water at 200ppm you will get 2500 litres etc.

However on any given water this calculation may be way out as mixed bed resin is made up of 40% Cation resin (-) and 60% Anion resin (+) Diffirent elements of contamination in water are - or + charged, so depending on what - or + ions make up your water you will get up to 30% more or less through.