Your RO or RO/DI unit...did you know?

[Myka]

I know lots of people know, but many don't, and I'm bored waiting for a download right now, so...

*drum roll*

When you first turn your RO or RO/DI unit on it spits out a higher TDS for the first litre or so of water. Mine spits out 8 ppm if I collect the very first cup of water that comes out of there, and slowly goes down to 0 ppm after about 1 litre of water has passed through. So I let my unit run for a couple minutes before collecting the water.

Also, check out your tap water's TDS. My cold water runs about 92 ppm, and my hot water runs about 102 ppm. So, even though your unit will run much faster if you use luke-warm water, you will often be pushing through water of a higher TDS, so you're using up your RO membrane quicker.

Ya, so there's my nerdy thought of the day.

Cheers!