The amount of oxygen dissolved in a solvent (usually water). Dissolved oxygen levels are used as a general indicator of water quality.

measure of the amount of oxygen in a substance, usually water.

The amount of free (not chemically combined) oxygen in water. Usually expressed in milligrams per liter.

Oxygen dissolved in a liquid, the solubility depending on temperature, partial pressure and salinity, expressed in milligrams per litre. Tables giving values for the solubility of oxygen in water have been published in standard methods.

The amount of free (usable) oxygen in water. Usually designated in parts per million.

The amount of oxygen

; Dissolved Oxygen is important to the health of aquatic ecosystems. All aquatic animals need oxygen to survive. Natural waters with consistently high dissolved oxygen levels are most likely healthy and stable environments, and are capable of supporting a diversity of aquatic organisms. Natural and human-induced changes to the aquatic environment c [..]

The concentration of oxygen dissolved in water, sometimes expressed as percent saturation, where saturation is the maximum amount of oxygen that theoretically can be dissolved in water at a given altitude and temperature.

the oxygen dissolved in sewage, water, or other liquid, usually expressed in milligrams per liter or percent of saturation. It is the test used in BOD determination. dissolved solids: the total amount [..]

this is a measure of dissolved oxygen that are carried in or are in a certain media

The oxygen freely available in water, vital to fish and other aquatic life and for the prevention of odors. DO levels are considered a most important indicator of a water body's ability to suppor [..]

oxygen that is dissolved in water. Generally measured as ppm or % saturation.

The oxygen freely available in water, vital to fish and other aquatic life and for the prevention of odors. DO levels are considered a most important indicator of a water body's ability to suppor [..]

The oxygen freely available in water, vital to fish and other aquatic life and for the prevention of odors. DO levels are considered a most important indicator of a water body's ability to sup [..]

The oxygen freely available in water, vital to fish and other aquatic life and for the prevention of odors. DO levels are considered a most important indicator of a water body's ability to suppor [..]

Refers to oxygen that is dissolved in water and therefore available to plants, fish, insects and other organisms.

The oxygen dissolved in water.  Adequate DO is vital to fish and other aquatic life. 

A measure of the amount of oxygen available for biochemical activity in a given amount of water. Low DO levels are generally due to inadequate waste treatment.

oxygen that is mixed into water.  The amount of oxygen in water depends on several characteristics of the water, but is always very low compared to the amount of oxygen in air.

Is the oxygen that has dissolved in water.

dissolved oxygen in water that is freely available for use by fish and other aquatic life. Different aquatic species need different levels of dissolved oxygen in the water in order to survive.

The oxygen dissolved in water, wastewater, or other liquid. DO is measured in milligrams per litre. If the DO of a sample of water is 2 mg/L, it means that there are 2lbs of oxygen in 1 mil lb of water.

(DO) The amount of oxygen dissolved in sewage, water, or any other liquid. Usually expressed in mg/L or percent of saturation.

Molecular oxygen dissolved in water or wastewater.

Dissolved Oxygen is important to the health of aquatic ecosystems. All aquatic animals need oxygen to survive. Natural waters with consistently high dissolved oxygen levels are most likely healthy a [..]

Amount of oxygen gas dissolved in a given volume of water at a particular temperature and pressure.

Fish and other aquatic animals breathe oxygen dissolved in the water. Algae and other plants growing in the water produce oxygen, and atmospheric oxygen also dissolves in water at the surface. In poll [..]

The amount of oxygen that is present in the water. It is measured in units of milligrams per liter (mg/L), or the milligrams of oxygen dissolved in a liter of water.  Just like humans, all of the Bay’ [..]

The amount of oxygen the water holds. Dissolved oxygen is important for the survival of aquatic organisms.

Oxygen dissolved in water. The amount depends on temperature of the water, plant photosynthesis, plant and animal respiration, and physical aeration caused by tumbling. Measured in parts per million ( [..]

Measures the amount of gaseous oxygen dissolved in an aqueous solution. Oxygen gets into water by diffusion from the surrounding air, by aeration (rapid movement), and as a waste product of photosynthesis.

The amount of oxygen dissolved in a body of water as an indication of the degree of health of the water and its ability to support a balanced aquatic ecosystem; also, the amount of free (not chemicall [..]

this is measured either as the concentration of oxygen dissolved in the water (expressed as grams of oxygen per cubic metre of water), or as the proportion of oxygen actually present relative to the theoretical oxygen-holding capacity of the water (expressed as "percentage saturation"). The latter measure is sometimes preferred be [..]

amount of oxygen gas dissolved in a given quantity of water at a given temperature and atmospheric pressure. It is usually expressed as a concentration in parts per million or as a percentage of satur [..]

Oxygen that is present (dissolved) in water and therefore available for fish and other aquatic animals to use. Wastewater often contains oxygen demanding substances that can consume dissolved oxygen if discharged into the environment without treatment.

The amount of oxygen gas dissolved in a given volume of water at a particular temperature and pressure, often expressed as a concentration in parts of oxygen per million parts of water.

Microscopic bubbles of oxygen that are mixed in water. Dissolved oxygen is necessary for healthy lakes, rivers, and estuaries. Fish will drown in water if the dissolved oxygen levels get too low (hypo [..]

oxygen gas dissolved in water.

Oxygen molecules that are dissolved in water, usually expressed in parts per million (ppm).

Amount of gaseous oxygen (O2) actually present in water expressed in terms either of its presence in the volume of water (milligrams of O2   per  litre) or of its  share in  saturated water (percentag [..]

Oxygen that is freely available in water to sustain the lives of fish and other aquatic organisms.

The concentration of oxygen dissolved in water, expressed in mg/l or as per cent saturation. (Saturation is the maximum amount of oxygen that can theoretically be dissolved in water at a given altitud [..]