The phrase "allowable content" is correct and usable in written English.
It can be used in contexts where you are discussing what types of material or information are permitted or acceptable, such as in guidelines or regulations.
Example: "The website has strict guidelines regarding allowable content, ensuring that all submissions adhere to community standards."
Alternatives: "permissible material" or "acceptable content".
Mr. Sternfels, of the refiners' association, pointed out that a separate E.P.A. rule, announced in December, cuts the allowable sulfur content of gasoline by 90percentt.
Before 2013 the allowable oxygen content for grid injection was prohibitively low, but a change to regulations in 2014 raised this to an achievable level.
Common allowable water content of transmission gas ranges from 4 to 7 pounds per MMSCF (64 112 mg/m3).
Accurate predictions and precise control of the allowable water content in CO2-rich fluids are required in large-scale pipeline operations.
The allowable tar content in gasification syngas is one of the key questions for the exploitation of the full potential of fuel cell concepts with integrated gasification systems.
Air pollution controls try to directly control pollution through standards on the allowable pollutant content in the atmosphere and to indirectly regulate it by setting emission standards at individual pollution sources.
Due to the detrimental effect of RH on siloxane absorption, the maximum allowable moisture content of LFG before purification is 50% RH and moisture removal processes are also required.
On 26 October 2012, however, the European Council decided that the allowable sulphur content for the rest of the EU seas should be lowered to 0.5%% effective 1 January 2020 even if enforcement for the rest of the world is delayed to 2025 (EU Directive 2012/33/EU [19]).
The allowable sulphur content in marine fuel in the other seas of the world was reduced from 4.5 to 3.5 % by weight on 1 January 2012, with the aim that it should be lowered to 0.5%% by the year 2020 or at the latest 2025.
The results may also suggest that multistage extraction maybe more sustainable for the reduction of oil sulfur content to allowable levels than increasing the oil/IL mass ratio.
