iCE 3000 Series Atomic Absorption Spectrometers The Thermo Scientific iCE 3000 Series Atomic Absorption Spectrometers are refreshingly different from any other atomic absorption instrument. They are compact, stylish and designed with ease of use as a priority.Thermo Fisher Scientific is the leading provider of analytical instruments, equipment, reagents and consumables, software and services for research, analysis, discovery and diagnostics.