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sci.dissolved-oxygen-saturation Calculator
Calculates dissolved oxygen saturation in freshwater and seawater from temperature and salinity using the Benson-Krause equations. DO saturation at 20 °C in freshwater = 9.1 mg/L — for every 1 °C rise, saturation drops ~0.3 mg/L, which is why warm rivers are more prone to oxygen depletion.
Inputs
T C
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
S Ppt
Reference formula or conversion factor shown for context.
P Atm
Force per unit area (Pa). Atmospheric pressure at sea level: 101,325 Pa. Check whether gauge or absolute pressure is required.
Results
DO saturation at T, S, P (mg/L)
How close the system is to its capacity limit. Above 80% sustained saturation typically leads to queuing and latency spikes.
freshwater saturation at T (mg/L)
How close the system is to its capacity limit. Above 80% sustained saturation typically leads to queuing and latency spikes.
salinity correction (mg/L)
Sample size or count used in the calculation.
DO critical thresholds
Reference formula or conversion factor shown for context.
Benson & Krause (1980) equation
The value at the specified point or condition.
dissolved oxygen status
Current state of the system, process, or metric — typically pass/fail, healthy/warning/critical, or a descriptive classification.