tds meter question
 

i just installed my new inline tds meter and was wondering is it possable for my ro/di unit to be taking out 100% of the particles in the water??? i would suspect not... it gives me a reading of 124ppm coming into the unit and a readin of 000 coming out of the unit.

is that possable that my ro unit could be that efficient?

Richard

After I change the filters on my 5stage Aqua Clear my hand held tds reads 0. It is starting to creep up to 2 then 3 after about a month and a bit. I don't know how accurate mine is but it was recomended for mthis site it's a milwalkee.

mine reads 0 after coming out of the unit. if it doesn't then whats the point? :wink:

well i agree that a reverse osmosis unit should be efficient but i thought they where like 83% efficient or sumthing like that.

Richard

My TDS inline reads 0(new filters), then will creep up as time goes on, Calgary water is not that hard to clean up.......

Mine reads zero. Mine is a RODI, so after the RO membrane is the deionizer, which basically traps any particles left in the water. Once my DI runs out, my levels are above zero.

It's the RO membrane that is supposed to be ~95% efficient, the DI gets the rest. This is how you can test your membrane to know when you need a new one.

reply
 

Does anyone know of a store in Calgary that supplies DI beads? If so, how much? Mine are 90% brown now.

I get a surge of TDS (post-RO/pre-DI) when I turn on my RO/DI that can be anywhere up to 150. It falls off quickly though, within 10 seconds usually it's down to zero. The post-DI is always zero - if not, the DI is spent and needs to be replaced.

I always kind of wondered if this TDS surging is normal (I have my RO/DI on only to fill my 50gal topup reservoir, about once every two weeks, otherwise it's off). It sort of looks like, judging by the comments so far, that this may not really be typical for others. Hmmm. Although maybe the way I use my RO/DI isn't typical..

I seem to remember reading somewhere that your RO/DI should be used at least once a week, maybe that was in my instructions - I'll have to check.