New your opinion on salt water

Hello

I've been looking around on the benefits of seawater and would like to get some for oral consumption like on this site http://oceanplasma.org/English/frames.html .
However, I would like to maybe try to do my own with himalayan salt but I don't know the appropiate ratios of salt and water to make a hypertonic and isotonic solutions.
Does anyone know how to make these saline solutions?
Thanks
Mike Tweet