When you buy a product ask what spec it is , how many litres per 100ppm.
Then do the maths price per litre and then you will know what product suits your pocket.
Mixed bed resin comes in many forms from 4000l to 7000l per 100ppm.
You may think you are getting a bargain but end up with a 4000l per 100ppm bag.
And be very careful mixed bed resin comes in two forms, one is for water purification the other will kill all your customers plants.
Now this will confuse a lot of suppliers as they probably have never seen a spec before.
