How can i decrease PH from 5 to7 and conductivity less than 2.5 micro-Siemens of REVERSE OSMOS(R.O) PLANT?

Question

This plant is used for getting De-ions water.which is used in pharma company for making syrup.

Answer 1

Add more salt.

Edit: Oops, I read that wrong!

Answer 2

You have TOO MUCH salt in the water. You need purer water to get reduced conductivity. The simplest way is to run it through a second reverse osmosis filter. You might also try an ion excange resin, thes work pretty well and are a lot cheaper to set up.