- Messages
- 1,481
- Reaction score
- 0
the directions for a duel in line TDS meter say to calibrate it with a342ppm solution
joseayes;861512 wrote: Buying a used unit, did you put everything in a good wash before installing any filters in the unit? Then did you install new Di resin in a used membrane? Did you knew for how long that membrane, if you had it when you got the used unit, was left alone with out water running through it? Just asking
Btw welcome to ARC! !
sargent1981;861537 wrote: I am looking to buy and RO/DI filtration system I just wanted to see if someone may have one to sell on here before I go and drop $150 on a new one.
heathlindner25;861530 wrote: the directions for a duel in line TDS meter say to calibrate it with a342ppm solution