The 235ATS includes Deuterium Background correction for Improved Accuracy D2 correction accounts for nonspecific background interference, increasing measurement accuracy and confidence. By removing background noise, D2 correction lowers detection limits for enhanced sensitivity and trace analysis. Correcting for variations in sample introduction and flame instability improves measurement precision. D2 enables accurate analysis even with complex sample matrices like oils, blood, and ashes. Automated D2 correction built into the system makes analysis easier for new users. D2 produces reliable, reproducible results by compensating for flame variations. D2 correction linearizes calibration curves and improves quantitation accuracy. Wavelength Range: 190 to 900nm, Accuracy ± 0.2nm, Precision ± 0.1nm Monochromator / Optics: 250mm Ebert mount, 600 lines/mm grating, 0.2-0.7-2.0nm bandpass Hollow Cathode Lamp Supply: Powered 3 lamp brackets, 3 to 75 mA peak in NORMAL mode. Acetylene pressure regulator with flash arrestor Atomic Absorption minor spares kit. 3 standard solutions Hood and Vent Kit Oil-Less air compressor with Air filter