Tds reading

[Rich c]

My ro/di water reads zero on my tds meter after it leaves my ro/ di system . When I add my salt mix to that water and use a tds pen meter to read it it reads over 900 is this normal after adding my salt mix?

 

[Gregcoyote]

Yes. The meter reads dissolved solids.

 

[Rich c]

Yes. The meter reads dissolved solids.

Thanks for the quick response