water question DI/RO

[James Hammett]

About to begin set up in my classroom. My science dept has a Deionized water system in our chem department. Is that water good to use? What's the difference in DI and RO do I need both? will I need to do any further treatment to the DI water to use it in my tank other than adding salt.

 

[redfishbluefish]

RO uses mechanical, chemical and membrane technology to reduce TDS (Total Dissolved Solids) by around 98%.

DI utilizes chemical exchange technology to now reduce that approximate two percent to 0 TDS.

If the chemistry department has DI water, the likelihood is that the have a RO\DI system......unless they are assuming distilled water is DI water.

Bottom line, pick up a hand-held TDS meter and test the water. Ideally you want zero TDS.

 

[James Hammett]

My chem teacher wasn't sure what she had other than it is DI. I just called the company that installed ands maintains our system and yes it is an RO/DI system with a 15o gal pressure tank back up. He said it is designed to be an "On Demand" System. So I guess I am good. (should be able to just add salt and fill Tank) Maybe I should start bottling for resale

 

[SashimiTurtle]

I would still check with a TDS meter to be sure, but if it's a RO/DI maintained for a chem lab I'd assume it would be good to go.