help with PPM meter

It looks exactly like HM Digital's TDS3 that I use without the logo. It must be a knock off or probably built by the same company that makes them for HMD. The price is cheap enough to gamble on it imo.
 
yes it's ok ..for a cheepo its great to use without worrying about screwing up a $80-$100 ppm meter.. go for it all it can do is help.. KEEP ON GROWIN
 
I've learned my lesson on cheap meters. Don't do it man. Getcha one of these.
http://www.getbluelab.com/shop/Bluelab+Commercial+Truncheon%AE+Meter.html

BluelabCommercialTruncheon_PrductPgSml.jpg


Never needs calibrating fully waterproof. Dead simple. Reasonably priced.
 
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