update, ya I got one, it's one of those forty dollar in line ones. it says my incoming tap water is 27ppm and out is 0.. when I take it out of line and put it in a cup of tap water it reads well over 200.. when i dip it in my filtered water I get a big fat zeroppm... so it isn't very accruate in line, and i assume it's accurate when it's used like a dip pen... I will buy a good one sometime soon.,, I got this one at blue sierra and I wonder what their return policy ison something like that, I got it about a month ago, just been lazy. plus I hate returning stuff to local fish stores cause they got it hard enough..
sorry for the ramble.. Jeff