salinity™ is identical to the distribution of anions and cations found in Natural Sea Water (NSW). We have compiled data from all the oceans and seas on the Earth, and have targeted the midpoint of the range for each element. We guarantee to be within ± 5% of the midpoint.
At a salinity of 35‰, for calcium, magnesium, strontium, pH, and alkalinity we have the following targets and/or ranges
Calcium Target 422 mg/L, range 400–443 mg/L
Magnesium Target 1336 mg/L, range 1269–1403 mg/L
Strontium Target 8.4 mg/L, range 8.0–8.8 mg/L
pHRange 8.4–8.6
Alkalinity Range 3.2–3.8 meq/L
2.72 kg (6 lbs) Makes 75 liters