Check the listing for details. THERMO SCIENTIFIC 42i-HL NO-NO2-NOx ANALYZER HIGH LEVEL. Condition: Seller refurbished, Made in United States. Listed at 9000.00 USD. The Thermo Scientific 42i-HL NO-NO2-NOx Analyzer is a high-level gas and combustion analyzer designed for precise measurements of nitrogen oxides (NOx) in various industrial applications. With a reputation for reliability and quality, this unit is manufactured by the well-known brand Thermo in the United States. Ideal for ensuring emissions compliance and optimizing combustion efficiency, this analyzer provides accurate data for improving environmental performance and reducing pollutants in the atmosphere.