TDS Meter Question

[halcyon_diver]

I just recieved my TDS meter and tested my water...
before RODI 152
After 5
is this an acceptable number or should the filtered water read zero?
Thanks

 

[trainfever]

I would think 5 would be OK with RO water but I would think the DI filter would take it to 0. My DO filter took my water to 0.

 

[halcyon_diver]

Thanks Train
i bought a package deal aquarium...came with the rodi, i think im going to change all the filters and get a membrane as well, that should take care of it.
thanks again for your reply