(9) Internal Revenue Code means the Internal Revenue Code of 1986 in effect for the federal tax year beginning on January 1, 2007, not including any changes made by federal law after that date, and any regulations adopted under that code applicable to that period.
Absorbance spectroscopy, commonly referred to as spectrophotometry, is the analytical technique based on measuring the amount of light absorbed by a sample at a given wavelength.
EC is a measure of the concentration of dissolved ions in water, and is reported in Âµmhos/cm (micromhos per centimeter) or ÂµS/cm (microsiemens per centimeter). A Âµmho is equivalent to a ÂµS. EC can be measured in a laboratory or with an inexpensive field meter. Also called specific conductance or specific conductivity.