The PGI 990 Atomic Absorption Spectrophotometer is available in the following configuration:

• Flame Only

• Graphite Furnace

• Combined Flame and Graphite Furnace with the option for up to nine heating ramps.

The system is fully controlled from a PC with AAWin Software. The main features of the system are:

• The integration of flame burner and graphite furnace in one compact unit enables automatic interchanging between the flame mode and furnace mode using few simple keystrokes.

• Eight lamp turret for automatic positioning of each hollow cathode lamp.

• Automatic fuel gas (C₂H₂) flow rate adjustment to optimise combustion in element analysis.

• Automatic adjustment of burner height for optimised analysis conditions.

• Automated wavelength scanning and peak searching.

• Automatic Reflecting/Transmittance beam-splitter positioning

• Automatic switchover of spectral bandwidth (5 choices).

• Automatic PMT and lamp current adjustment, automatic AA and BG energy balance