RODI filters

[IDAN]

How often or when do you change your filters?
I was always wondering how to know when filter go bad

 

[cloak]

TDS meter.

TDS-3 Handheld TDS Meter & Thermometer

The TDS-3 Handheld TDS Meter from HM Digital is a useful tool to spot check the TDS of your home water supply or RO/DI unit output. This unit features a digital display, built in thermometer, and comes with a carrying case. As with all HM-Digital products, the TDS-3 comes factory calibrated.

www.bulkreefsupply.com

Water coming out of your RO/DI unit should read 0 on this device. When it it starts reading 1, 2, 3 etc it's probably time to replace the filters.

 

[IDAN]

ok, thank you!
I have TDS meter on my rodi system and the paper tester

 

[Randy Holmes-Farley Verified Community Expert]

As mentioned, replace the DI when TDS rises to 1 ppm.

I replaced my sediment filters when the pressure drop across it becomes too high . If you do not have a pressure gauge, reduced flow rate is a similar indicator.

I'd replace the carbon block when it clogs (based on pressure or flow), or after 6-12 months if your water is low in particulates and it doesn't seem to clog much.

 

[IDAN]

As mentioned, replace the DI when TDS rises to 1 ppm.

I replaced my sediment filters when the pressure drop across it becomes too high . If you do not have a pressure gauge, reduced flow rate is a similar indicator.

I'd replace the carbon block when it clogs (based on pressure or flow), or after 6-12 months if your water is low in particulates and it doesn't seem to clog much.

Thank you, I just replaced all set 5 stage filter and I'll monitor it. Pressure gauge shown now on 4.5 bar