Fresh water salinity ppt
- what is salinity how is it measured
- what is salinity how is it measured and expressed
- what is seawater salinity and how is it measured
- what is practical salinity and how is it measured
How to measure salinity of water at home.
Salinity
Introduction
| Salinity class | S |
| Hyperhaline | > 65 |
| Metahaline | 45-65 |
| Euhaline | 30-35 |
| Polyhaline | 18-30 |
| Mesohaline | 5-18 |
| Oligohaline | 0.5-5 |
The salinity of seawater is defined as the total amount by weight of dissolved salts in one kilogram of seawater.
Salinity is expressed in the unit g / kg, which is often written as ppt (part per thousand) or ‰ (permil).
How to measure salinity of seawater
Salts dissolved in seawater are dissociated into their ions; the predominant ions are chloride and sodium; other significant ions are magnesium, sulfate, calcium and potassium. Over the years, various methods have been developed to determine salinity.
The most practical method currently used is through electrical conductivity. Because this is an indirect method, an accurate relationship has been established between conductivity and salinity.
Salinity calculatorThe salinity determined in this way is a dimensionless quantity that is called the practical salinity. According to the practical salinity scale, typical 'standard' seawater has a salinity of 35. In order to achieve better consi
- what is salinity measured in units
- what does salinity signify how is it measured