Need to reclaibrate my TDS monitor on my RO/DI unit. It is a HM Digital, DMI In-line Dual TDS meter. Instruction booklet has no information, except "Calibrate with NaCl". The unit is approx. 1 1/2 yrs old. The unit use to read 000 ppm, now read 002 ppm and does not go below this. All cartridges are new.
Business Today: Budget 2026 changes TDS, TCS rates across sectors: Who pays more, who gets relief
Budget 2026 changes TDS, TCS rates across sectors: Who pays more, who gets relief
The Drudge Report has been going down hill. But the post debate cover/home page is a full.on TDS sufferer's fantasy. Was it sold or he let's the staff do everything.
I just started about a month now and bought a used ro/di 75gpd system. I decided I wanted to do it right the first time. Owner said he used it only for about 400 gallons. I waited and fill the 75 g tank plus sump. 4 weeks later I see all sort of algae and sand turning red. I bought a tds meter finally and my water is 46ppm and after ro/di 23ppm. Should I change all 3 filters (micron, sedi, di ...
TDS of 4 is not bad but thats when I usually plan on changing the DI resin. Like mentioned above the storage tank could have 'collected' dust and other items that raised the TDS. I'd also test the TDS before the DI resin, will let you know how well the filters are doing, higher numbers (10+) indicate time to think about replacing the filters.