Water Quality Probe - Square

Water Quality Probe


 This versatile probe facilitates the measurement of a wide range of water quality parameters.  These include:

  • Optical Dissolved Oxygen (DO): One of the primary indicators of aqua quality, this measures the concentration of dissolved oxygen in water.
  • Absolute Electrical Conductivity (EC): Provides an indication of the presence of inorganic dissolved solids and therefore the purity of water.  Pure water is an extremely poor conductor of electrical currents and therefore a change in EC can suggest degradation of water quality.
  • Specific Electrical Conductivity (EC): The EC adjusted to reflect temperature of the water being tested.
  • Water Acidity (pH): Aquatic organisms are often sensitive to the acidity of water.  Therefore monitoring and maintaining the pH balance is important in many situations.  
  • Oxidation Reduction Potential (ORP): Oxidation is the loss of electrons by a chemical species following the introduction of a new species.  The corresponding reaction is the reduction process in which chemical species gain electrons.  ORP is therefore an indication of the potential for oxidation or reduction reactions to take place.   
  • Total Dissolved Solids (TDS): Indicates the concentration of minerals, salts, metals and ions dissolved in water.  
  • Resistivity: The ability of water to resist an electrical current.  This is the opposite of EC.  Therefore, a body of water with a high EC will have a correspondingly low resistivity.  
  • Salinity: Provides a value for the concentration of dissolved salts in the water.
  • Seawater Specific Gravity (SSG): A measure of the density of water.  Saltwater is more dense than pure or freshwater.  
  • Temperature: Affects a number of chemical processes that take place in water.
  • Depth: Indicates the depth using EC

Dissolved Oxygen (DO) Range 0-500.0%/0-50.00 mg/L

Dissolved Oxygen (DO) Resolution 0.1%/0.01 mg/L

Dissolved Oxygen (DO) Accuracy 0-200%±1% of reading 200%-500% or ±10% of reading

Conductivity (EC) Range 0-200 mS/cm (0-200,000 μS/cm)

Conductivity (EC) Resolution 0-999 μS/cm, 10.00-99.99 mS/cm, 100.0-200.0 m

Conductivity (EC) Accuracy ±1% of reading or ±1 μS/cm if greater

Total Dissolved Solids (TDS) Range 0-10,000 mg/L (ppm)

Total Dissolved Solids (TDS) Resolution 2 Ranges - 0-9999 mg/L or 10.00-100.00 g/L

Total Dissolved Solids (TDS) Accuracy ±1% of reading or ±1 mg/L if greater

Resistivity Range 5 Ωcm-1M Ωcm

Resistivity Resolution 2 Ranges - 5-9999 Ωcm or 10.0-1000.0 KΩm

Resistivity Accuracy ±1% of reading or ±1 Ωcm if greater

Salinity Range 0-70 PSU or 0-70.00 ppt

Salinity Resolution 0.01 PSU or 0.01 ppt

Salinity Accuracy ±1% of reading or ±1 unit if greater

Seawater Specific Gravity (SSG) Range 0-50 st

Seawater Specific Gravity (SSG) Resolution 0.1 st

Seawater Specific Gravity (SSG) Accuracy ±1.0 st

Water Acidity (pH) Range 0-14 pH/±625 mV

Water Acidity (pH) Resolution 0.01 pH/±0.1 mV

Water Acidity (pH) Accuracy ±0.01 pH/±5 mV

Oxidation Reduction Potential (ORP) Range ±2000 mV

Oxidation Reduction Potential (ORP) Resolution 0.1 mV

Oxidation Reduction Potential (ORP) Accuracy ±5 mV

Temperature Range -5 °C to +50 °C

Temperature Resolution 0.1 °C

Temperature Accuracy +0.5 °C

Depth Range 0-100 m (0-330 F)

Depth Resolution 0.01 m/F

Depth Accuracy ±1%