TDS and EC ... HELP PLEASE !

[nznene]

hello folks 😀 i am so confused about how to accurately measure tds and ec or ppm .
i turn on my meter put it in tap water and it says ppm 0039 x 10 .see the photo . But how does that relate to the scale on the graph shown ? and the same thing with the EC reading of 0076 ?
it is doing my head in ..
does this meter require calibration ?

Thanks to anyone who can help me .

 

[Tersky]

I have no idea what that chart is. The pH lists things like "joy" "peace" and "love" and shit. That said I suspect that you multiply your value by ten, though that is an odd TDS meter. I would think your tap is about 380 ppm which is slightly hard water.

 

[9fingerleafs]

Most meters use the 500 scale. Meaning every 500 ppm equals to 1000 Mili Siemens. So your meter is showing 380 ppms = to 760mili Siemens or generally showed just as 0.76 EC

 

[9fingerleafs]

Didn't realized at first glance. So funny 😂

 

[Tersky]

lol yeah i did a double take 9fingerleafs , prob a bad google translate or something.