Specifications include, but are not limited to: Instrument and Compliance with EPA Regulatory Methods Instrument must comply fully with US EPA Method 7473 Instrument must be based on integrated sample drying, thermal decomposition, amalgamation and spectrophotometry sequence. System must include decomposition tube, gold amalgamator, mercury trap and forty nickel boats. System must include a 40 position circular autosampler for smooth transport of sample boats. System (autosampler, furnaces, spectrophotometer) should be one piece (i.e. not modular) to ensure ruggedness and longevity. System should be fully operable, and have been tested, in a mobile or field laboratory environment. System must be in production for at least 5 years.