Whoa 16 to 20! Your membrane will last a lifetime lol.
The meter I think is much more acurate with water flowing past the probe contacts. Like I said I only dipped the probe into a glass of tapwater so there was no flow. The unit is not quick conenct fittings so I *really* didn't want to bother with making another cut and then redoing the connection later.
I'll Continue as is for now since it seems that things are ok. I'm sure these meters are not THAT accurate but whatever I'm getting out is very low in tds compared to the source. Good enough right now I need SALTWATER!
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