Only just today did I finally buy the dual TDS meter , shows input and output TDS and is connected directly into the quickconnect lines, Im sure youre all familiar.
Anyways, Im getting 0.00 on the output, and the input fluctuates between 100 and 112(havent seen it higher or lower in 8hrs).
Now my house is 94 yrs old, but I did replace all the plumbing with new copper pipes all the way to the main.
Im just wondering if this meter is accurate right out of the box, it says on the back of the unit to calibrate with NaCI.
Is that on an "as needed" basis, or do I gotta do it in the beginning.
Am I getting accurate readings?