It is by measuring the electrical conductivity of the pool water that a value for total dissolved solids can be found. The conversion between Conductivity and Total Dissolved Solids is Conductivity in microsemens/cm X 0.7 = TDS in mg/litre

(1) A material property relating heat flux (heat transferred per unit area per unit time) to a temperature difference. In American units, it is typically defined as the amount of heat (Btu) transmitted in one hour through one square foot of material 1 inch thick, with a temperature difference of 1°F between the two surfaces of the material. (2) The property of a water sample to transmit electric current under a set of standard conditions. Usually expressed as microhms conductance.

ability to carry the effect of a stimulus from one part of a cell to another; highly developed in nerve and muscle fibers (cells)

n: 1. the ability to transmit or convey (as heat or electricity). 2. an electrical logging measurement obtained from an induction survey, in which eddy currents produced by an alternating magnetic field induce in a receiver coil a voltage proportionate to the ability of the formation to conduct electricity. See induction log.

The theoretical definition of conductivity is the "reciprocal of the resistance of a cube of a substance 1 cm on a side at a specified temperature". Typically the units of measure are microhms/cm (uohms/cm) or microsiemens/cm (uS/cm). Conductivity or specific conductance is a measure of the ability of a fluid to carry a charge which is directly related to the concentration of dissolved substances. As the total dissolved substances in the water increases, the conductivity of the water also increases. For More information see Total Dissolved Solids.

the measure of the ionic strength or concentration in water

A measure of the ability of a material to conduct electrical current.(Course Material/EddyCurrents/Introduction/historyofET.htm)(Course Material/EddyCurrents/ProbesAndApplication/conductivitymeasurements.htm)

a measure of the ability of a solution to conduct electricity. Conductivity can be an indicator of the level of metals or salts in a water sample.

the ability to serve as a channel or pathway for the flow of heat, sound, or electricity

a measure of the total ion content. The ions present represent the halogen, carbonates, sulfates, or inorganic compounds found in the soil at specific sample locations.

A unit measure of electrical conduction. The facility with which a substance conducts electricity, as represented by the current density per unit electrical-potential gradient in the direction of flow. Electrical conductivity is the reciprocal of electrical resistivity and is expressed in units such as mhos (reciprocal ohms) per cm. It is an intrinsic property of a given type of material under given physical conditions (dependent mostly on temperature). Conductance, on the other hand, varies with the dimensions of the conducting system and is the reciprocal of the electrical resistance.

The quantity of heat that flows through a material measured in heat units per unit time per unit of cross-sectioned area per unit of length, (electrical) the quantity of electricity that is transferred through a material of know cross-section and length.

A measure of the ability of a metal to conduct an electrical current.

characterises the conduction capacity (electrical and thermal) of a substance. Electrical conductivity is expressed in siemens per unit of length

The ability of a substance to conduct or transmit heat, electricity, or sound. Relating to water quality, it is a measure of dissolved minerals and/or ions in the water. Typically measured in micromhos per centimeter (µmhos/cm). If baseline levels of conductivity are established for an area, this measurement can be used to detect possible pollution discharges that have a high ionic strength. This would include manure directly from livestock in streams, land application, or releases from storage basins.

property involving the transport of electrons or heat from one point to another. (see electrical conductivity)

a measure of how well sea water conducts electricity. Conductivity increases with increasing salinity, and is thus used to measure salinity indirectly

a measure of the ability of a solution to conduct electricity. It is the reciprocal of resistivity, which relates the resistance of a conductor (in ohms), to its length and cross sectional area. Units of conductivity are Siemens per centimeter (S/cm). Conductivity is measured with a conductivity cell. This contains two platinum electrodes of known area rigidly fixed at 1 cm apart. The electrolytic conductivity of the solution is determined by passing an alternating current between the electrodes. The conductivity is related to the ionic strength of the solution.

A measure of water's capacity to convey an electric current. It is related to the total amount of dissolved charged substances in the water. Therefore, it can be used as a general indicator of the quality of the water and can also suggest presence of unidentified material in the water. It is often used as a surrogate for salinity measurements.

The ability of a material to transfer energy from one place to another. Thermal conductivity describes a substances ability to transmit heat. Electrical conductivity describes a substances ability to transmit electrical current. Conductivity is to the opposite if resistivity.

The ability of a substance to transmit heat, light or electricity. Aluminum has a high electrical and thermal conductivity, making it useful in a wide range of electrical and heat-exchanging applications.

the transmission of heat or electricity or sound

The ability to carry an electric current (electricity) or thermal energy (heat).

a measurement of the ability to transfer electricity through matter.

A measure of the resistance of water to electrical flow; this resistance is a direct measure of the salinity of water, and it can be measured accurately with a conductivity sensor

A measure of the ability of a material to permit conduction of heat flow through it.

The time rate of steady-state heat flow through a homogeneous material induced by a unit temperature gradient normal to the unit area (in W·m-1·K-1) or (Btu·in·h-1·ft-2·°F-1)..

Represents the electrical current carrying capacity of a water. It is used as a means of indirectly measuring the total dissolved solids concentration of a water.

The property of an object that deals with how easily an electric current can pass through it. Gold, copper and silver are highly conductive. Iron is not. All-metal objects have conductive properties that depend on their metal type, alloy, size, etc.

a measure of the ability of a liquid to transmit electrical current or heat

The ability of a material to allow electrons to flow, measured by the current per unit of voltage applied. It is the reciprocral of resistivity.

The power to transmit or be a channel for heat, electricity, sound or other form of energy.

Physical property of a food material which determines its ability to conduct heat. Expressed in Watts/meter oC.

a measure of a substance's ability to conduct heat or transmit electrical current. This conduction of energy is proportional to the total ion content of the water at a given temperature. Since conductivity is then a measure of the total salt (ion) content of the seawater, it is used to determine seawater salinity.

A measure of a solution's (i.e. water) ability to carry an electrical current. The measurement is used in fresh water analyses to obtain a rapid estimate of dissolved solids or salts content of a water sample. A pristine mountain stream may have a conductivity as low as 15 µmhos/cm, and natural levels in North Carolina are generally less than 100 µmhos/cm. In estuarine and marine waters, salinity is a more appropriate measurement.

The ability of a material to carry an electrical current. Measured by the current per unit of voltage applied. The reciprocal of resistance.

Concentration of major salts or major ions in solution.

The property of transmitting electricity, heat, etc.

a measure of a water sample's capacity to conduct electricity, often used to approximate the amount of dissolved salts. Units are Seimens (S) per unit length. Conductivity of tap water is typically 50–150 µS/cm (where µS = S/1000,000).

A materials ability to successfully allow current flow.

Measure of the ability of water to conduct electrical current. It is directly related to the total dissolved substances in the water.

A measure of the ease with which electrical carriers flow in a material: the reciprocal of Resistivity.

The rate at which heat is transmitted through a material.

The measurement of the ability of a material - typically a liquid or solid solution - conduct an electric current. In metal working fluid, this is dependent on the amount of dissolved ionic material. The higher the conductivity of a material, the more likely it is that the material will conduct an electrical current.

A metal's ability to conduct electricity. Aluminum is a good conductor, and therefore is often used in wires.

An electrical quantity (defined as the inverse of Resistivity) that determines how much Current will flow through a resistive element per unit of Potential drop across the element.

is an indication of the amount of dissolved ions (for example: salt, metals) present in the water. It is determined using a meter that measures how easily electricity can flow through the water sample. If the average conductivity measured at a site is 800 microSiemens (µS) or less, it is considered natural for stream water. Conductivity over 800 µS is considered excessive and may indicate the presence of toxic substances (Realize that many toxins, although harmful, are not measured by conductivity). One source of elevated conductivity is development. At some of our sites with high levels of development and impervious surfaces (roads, driveways, roofs), rainwater washes chemicals, such as fertilizers and pet wastes, from the developed landscape into the creek.

The ratio of electric current to the electric field in a material. Passage of electric charge which can occur a variety of ways such as passage of electrons or ionized atoms.

(electrical) - the property of a water sample to transmit electric current under a set of standard conditions. It is the inverse of resistance and expressed in units of Siemens

A measure of the ability of a solution to carry an electrical current.

the property or power of conducting heat.

A measurement of how easily charge carriers can flow throughout a material.

Ability of a material to conduct electricity or heat.

The power of conducting heat, electricity or sound. Thermal conductivity is the power to conduct heat; electrical conductivity is the power to conduct electricity. Silver, for example is an excellent thermal and electrical conductor. It transmits both heat and electricity very well.

The ability of a material to conduct current.  The reciprocal of resistivity.

The ability of water to transmit electricity, the property being the inverse of resisistivity.

The ability of water to conduct electricity. When measured with a standard apparatus, it is called specific conductivity and is a function of the total ionic dissolved solids. As a rule of thumb, TDS = 2/3 specific conductance measured as micromhos.

ability of metals and minerals to transmit electricity

The facility with which the earth or a geological formation conducts electricity. Conductivity is usually measured in milli-Siemens per metre (mS/m). It is the reciprocal of resistivity.

Percentage of electrical value compared to copper. Measure of resistance to electrical current

The ability of a conductor to allow the passage of electrons, measured in the current per unit of voltage applied, shown in resistance.

Defines the electrical properties of a sheet of paper. Conductivity influences toner transfer and image quality of many print-on-demand systems.

1. The ratio of the current per unit area (current density) to the electric field in a material. Conductivity is expressed in units of siemens/meter. 2. In non-technical usage, the ability to conduct current. Corona - The production of positive and negative ions by a very localized high electric field. The field is normally established by applying a high voltage to a conductor in the shape of a sharp point or wire.

The measure of a metal target's ability to allow eddy current generation on its surface.

The ratio of the electric current density to the electric field in a material. Also called electrical conductivity or specific conductance.

The rate at which heat is transferred through a material.

The measure of a substance's ability (in our case, water) to carry electricity. Conductivity depends on the concentration of charged particles (ions) and temperature. It is measured in micromhos (mmho/cm).

The ability of a material to conduct heat from the warm side to the cold side.

A term describing the capability of any material to carry an electrical charge, typically expressed in terms of the percentage of conductivity of copper, which has 100% conductivity.

is the parameter representing the capacity of ions in an aqueous solution to carry electrical current.

The quantity of heat that will flow through one square foot of homogeneous material, one inch thick, in one hour, when there is a temperature difference of one degree Fahrenheit between its surfaces.

is the ability of a substance to conduct heat or electricity.

A term used in describing the capability of a material to carry an electrical charge. Usually expressed as a percentage of copper conductivity -- copper being one hundred (100%) percent. Conductivity is expressed for a standard configuration of conductor.

The amount of heat (Btu) transmitted in one hour through one square foot of a homogeneous material 1 in. thick for a difference in temperature of 1° F between the two surfaces of the material.

The electrical conductance, at a specified temperature, between the opposite faces of a unit cube; usually expressed as ohm-l cm-1.

The transfer of heat through a given material -- see U-value which is the measure of conductivity, the inverse of R-value.

Conductivity is a measure of the ability of a material to conduct electrical charge.

The process of electrical transfer through water, measured in µSiemens/cm.

Measures water's ability to conduct an electric current. Conductivity is reported in micromhos per centimeter (umhos/cm) and is directly related to the total dissolved inorganic chemicals in the water. Values are commonly two times the water hardness unless the water is receiving high concentrations of contaminants introduced by humans.

the scale, described as electrical conductivity (EC) or conductivity factor (CF), that is used to measure the strength of nutrient solution. Pure water doesn’t conduct electricity. But as salts are dissolved into the pure water, electricity begins to be conducted. An electrical current will begin to flow when live electrodes are placed into the solution. The more salts that are dissolved, the stronger the salt solution and, correspondingly, the more electrical current that will flow. This current flow is connected to special electronic circuitry that allows the grower to determine the resultant strength of the nutrient solution.

The ability of a material to conduct electricity. It is the inverse of resistivity and is measured in Siemens per meter (S/m) or mho/m. The conductivity is a property of the material, whereas the conductance also depends on the volume measured. The two are related by a system constant, which in simple cases is the length between the measurement electrodes divided by the area. In the most general case, the conductivity is the current density divided by the electric field and depends on the frequency of the applied signal.

quantity proportional to the amount of electrical energy transported through a solution by the electrolytes contained in it. It is measured in milliSiemens/cm (mS/cm).

The amount of heat (Btu) transmitted in 1 hour through 1 sq. ft. of a homogenous material 1 in. thick for a difference in temperature of 1o F. between two surfaces of the material.

A measure of the ability of a material to conduct an electric charge.

The ability of a substance to conduct electricity or heat.

Reciprocal of volume resistivity. Conductance of a unit cube of any material.

The property of a substance to conduct (carry) heat or electricity; the unit of measure is the siemens (formerly called mho), which is the reciprocal of resistivity (1 divided by resistivity).

a measure of the soluble salts in the soil, used as an overall indicator of the level of macro- and micronutrients in the soil.

The quality or power to carry electrical current; in water; related to the concentration of ions capable of carrying electrical current. (See conductance, electrolyte.)

a measure of the ability of water to pass an electrical current.

The quality or power to carry electrical current; in water, the conductivity is related to the concentration of ions capable of carrying electrical current.

The ease with which a substance transmits electricity.