reference conditions

These values may not be computed at the same reference conditions.

Good practice is to always incorporate the reference conditions of temperature and pressure.

Many different definitions of standard reference conditions are currently being used by organizations all over the world.

Other organizations have established a variety of alternative definitions for their standard reference conditions.

It will change the value from the original calibration state referred to as reference conditions that are free of installation effects.

A companion grant from the same source focused on the identification of "reference conditions" in the Great Lakes.

The molar volume of any ideal gas may be calculated at various standard reference conditions as shown below:

Water potential is the potential energy of water per unit volume relative to pure water in reference conditions.

For example, ecologists and others have developed reference conditions for the ocean and for the Earth's crust.

The FDA stated "Your products are not generally recognized as safe and effective for the above referenced conditions."

Stating the molar volume of a gas without indicating the reference conditions of temperature and pressure has no meaning and it can cause confusion.

Many environmental protection agencies have issued regulations that limit the concentration of pollutants in gaseous emissions and define the reference conditions applicable to those concentration limits.

This article presents methods for converting concentrations from ppmv to mg/m (and vice versa) and for correcting the concentrations to the required reference conditions.

It also allows managers to recreate reference conditions and evaluate possible instream and watershed restoration measures or alterations (such as dam removals or changes in water withdrawals).

Natural gas companies in Europe and South America have adopted 15 C (59 F) and 101.325 kPa (14.696 psi) as their standard gas volume reference conditions.

Installation effects such as insufficient straight pipe, exceptional pipe roughness or smoothness, elbows, valves, tees and reducers causes the flow conditions within the pipe to vary from the reference conditions.

Optical Loss / Return Loss performance is checked using specific reference conditions, against a reference-standard single mode test lead, or using an "Encircled Flux Compliant" source for multi-mode testing.

Additionally stated by the FDA, the goji juice was "not generally recognized as safe and effective for the referenced conditions" and therefore must be treated as a "new drug" under Section 21(p) of the Act.

It is equally as important to indicate the applicable reference conditions of temperature and pressure when stating the molar volume of a gas as it is when expressing a gas volume or volumetric flow rate.

Some express the concentrations as ppmv and some express the concentrations as mg/m3, while others require adjusting or correcting the concentrations to reference conditions of moisture content, oxygen content or carbon dioxide content.

For example, IUPAC has, since 1982, defined standard reference conditions as being 0 C and 100 kPa (1 bar), in contrast to its old standard of 0 C and 101.325 kPa (1 atm).

In Covington's presettlement model of restoration includes establishing reference conditions, removing younger trees and accumulated ground litter, and application of controlled low-intensity fires in an attempt to reduce competition and produce forests with larger, healthier trees less prone to disease and catastrophic fires.

In the first phase, stations were targeted to fulfill some of the requirements of a defensible long-term monitoring program; these included definition of management zones, reef types and sampling units, documentation of measurement variability and reference conditions, and characterization of metric responses to gradients of human activity.

In the announcement, Batayneh stated that papers filed by the construction consortium in March describing the consortium's financial details "included a number of issues that violate the reference conditions and the agreement for the construction and operation of the project at the agreed time" as the primary reason for the cancellation.

In industry and commerce, standard conditions for temperature and pressure are often necessary to define the standard reference conditions to express the volumes of gases and liquids and related quantities such as the rate of volumetric flow (the volumes of gases vary significantly with temperature and pressure).