Press the ‘Convert’ button to execute the conversion. Example įirst, enter the value in parts-per-million (0.5) in the blank text field. It erases all data of the previous conversions from the calculator with a single click. Use the ‘Reset’ button when carrying out new conversions. The conversion result is displayed below the control buttons in parts-per-billion. Press the ‘Convert button to initiate the conversion from PPM to PPB. It has a blank text field where you enter the value to be converted toparts-per-billion. This is a conversion calculator that is used to convert the numbers in parts-per millions (PPM) to parts-per-billion (PPB).
NIST periodic table)For example the molecular weight of H2S is 2x1.008 + 32.06 = 34.08ĭisclaimer : This Calculator is provided as a free service to our users. Molecular weight: Molecular weight is a measure of the sum of the atomic weights of the atoms in a molecule.So if you don´t know the molecular weight of a gas but you know you can calculate easily the molecular weight using the periodic table (e.g.
Usually it is referenced at a pressure of 1atm and 25✬. Mg/m3: milligrams of contaminant per cubit meter. For liquids or solids this calculator cannot be used. Concentration by volume of one part of gas per million parts of air. However if you need to consider different conditions of pressure and temperature, you will need to introduce the following information Temperature ppm (parts per million) mg/m3 (miligram per cubic meter) Concentrationįor most calculations you will only need to complete the above information as the mg/m3 concentration is understood to be referenced at 25✬ and 1atm (1013.25mbar)
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