Epsilon r of Salty Water - dependance on concentration

[flanello]

Epsilon r of Salt Water

Has somebody an idea where I can find information about the epsilon r and conductive values of water with different amount of salt in it?

 

[piboo]

Epsilon r of Salt Water

hi
For seawater,

er = 80
s = 4600 mS/m

regards

piboo

 

[PanosB_GR]

Epsilon r of Salt Water

I would say, the real part of epsilon remains the same, but an imaginary part with the parameter sigma*frequency*mju0 gets there also, making the refractive index a complex number, thus represanting the attenuation of the electromagnetic field.

I guess, finding an instrument that measures conductivity wont be hard, or you might even calibrate your own setup with copper rods. check out **broken link removed**
where they state

Absolute pure water - 0.055 µS/cm
Distilled water - 0.5 µS/cm
Mountain water - 1.0 µS/cm
Most drinking water sources - 500 to 800 µS/cm
Sea water - 56 mS/cm
Max for potable water - 1055 µS/cm

 

[flanello]

Re: Epsilon r of Salt Water

Thanks for the information.
Do you know where I can find a table (or a formula) of the salt content and conductivity?
I want to know if the conductivity of water increases linear with the salt content.

 

[shlomo22]

Epsilon r of Salt Water

I looked here
https://waterontheweb.org/under/waterquality/conductivity.html
and the conductivity seems to depend somewhat on exactly which salts are dissolved, which of course is not exactly the same in different bodies of water.