Quote Originally Posted by xcrispi
I got a 8 oz. bottle of each 4.0 - 7.0 for like 12.00 online .

Crispi :jointsmile:
Crispi, can I have some of what you're smoking?

The referenced calibration solutions are for a pH meterr. You want the correct calibration solution for your meter, which will be something like xxxx ppm. (My meter uses 1382 ppm calibration solution.)

but where can i get NaCl...??
LOL - NaCl is common salt. I suppose you could make a saturated solution in distilled water and you would know about what the ppm should be, but calibration solution is soooo much easier.

PC :smokin:
PharmaCan Reviewed by PharmaCan on . THE PPM of my Faucet water is 760ppm!!! What do i do???Help I just received my tds meter and my faucet water is saying 760 ppm!!! What do i do??? I have a hydro grow in process right now and i dont know what i can do with such a high reading??? Someone please help!! Rating: 5