Ro/di

[Flanders]

They do not typically need to be calibrated, I don't think. You use them in every stage of the process - test your tap, test your RO pre DI, test your RODI. That way you know how everything is working.

 

[Foody]

Ellie, do you allow your system to run for a minute or so prior to collecting a sample for testing?

 

[Foody]

My TDS meter arrived today. I tested a cup of tap water and it was 144ppm. I then tested a bucket of rodi water that I ran last night and it tested 002ppm. Is this acceptable? Do most folks run their filter until it begins to read 000 before running their water change water?

 

[cardiffgiant]

My TDS meter arrived today. I tested a cup of tap water and it was 144ppm. I then tested a bucket of rodi water that I ran last night and it tested 002ppm. Is this acceptable? Do most folks run their filter until it begins to read 000 before running their water change water?

I think 002 is fine. You'll find some TDS when you fill a buckets that you use for mixing salt or doing water changes.

When I used to fill 5 gallon batches I used to run off some of the initial product water. I fill 30 gallon batches now, and don't worry about it.

 

[EllieSuz]

Same here...I make 15 gallons of water at once and don't worry about flushing the RO/DI. If your water changes are just a few gallons, I'd flush it first.

 

[Foody]

So then my TDS meter was simply to verify that my rodi filter was working correctly

 

[cardiffgiant]

 

[cardiffgiant]

:lmao:

That's all you need it for. To make sure that each section of your RODI is doing what it's supposed to and to figure out what needs to be replaced.