Brine Salinity
Salt concentration of a brine or curing solution by mass.
Formula
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Example
60 g salt / 1000 g water ⇒ 5.7%
How it works
This formula gives the mass percentage of salt in a brine by comparing the salt mass to the total mass of the solution. It works because salinity by mass is defined as the fraction of the mixture that is salt, multiplied by 100 to turn it into a percentage. Using mass rather than volume is more reliable, since salt water can change volume when salt dissolves.
When to use it
Use this when you need to know how salty a curing, pickling, or brining solution is by weight. It is also useful in food production and recipe scaling when consistent salt concentration matters.
Worked example, step by step
Suppose a brine contains 45 g of salt and 955 g of water. S = (m_salt / (m_salt + m_water)) × 100 S = (45 / (45 + 955)) × 100 S = (45 / 1000) × 100 S = 4.5% So, the brine salinity is 4.5% by mass.
Common mistakes to avoid
- Dividing by only the water mass instead of the total mass of salt plus water
- Forgetting to multiply by 100 when converting the fraction to a percentage
- Mixing up grams of salt with grams of finished brine after evaporation or other changes
Did You Know?
A 5–8% brine is typical for quick poultry brining; charcuterie curing brines can climb well above 15%.
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