CH₄ Factor

This factor increases or decreases the significance of CH₄ in the calculation of carbon.  CH₄ does not have a significant impact on the computed percent carbon, so it has a minor role in the equation.  If the measured gas has over 5% CH₄, its role in the equation may become greater than it should be.  In these cases the CH₄ factor should be reduced.  In cases where the CH₄ is present in excess of 7 or 8%, this factor can be reduced to zero.