The high vacuum pump is a molecular turbopump, equipped with a humidification device for wet cleaning.
The sample flow path and standard gas flow path are independently separated, with independent standard gas cylinder interfaces (outlets) and sample cylinder interfaces (outlets) respectively used for standard gas and sample dilution, fundamentally preventing cross-contamination.
Number of sample positions: 16; Can be used in conjunction with a preconcentrator to automatically analyze samples in Suma canisters or sampling bags, compatible with commercially available Suma canisters and air bags of various brands.
Meets the relevant quality assurance requirements for sample collection, pre-analytical treatment, and standard sample preparation, as specified in the HJ 759-2015 and HJ 1078-2019 standard methods, the "2019 Monitoring Plan for Volatile Organic Compounds in Ambient Air in Cities at Prefecture Level and Above," and the US EPA TO-14 and TO-15 standard methods.
An atmospheric preconcentrator is an analytical instrument used in the fields of environmental science and technology and resource science and technology. After environmental air is collected through the sampling system, it enters the atmospheric preconcentrator. Under low temperature conditions, VOCs in the environment are condensed and enriched in the cold trap, and then rapidly heated to "flash evaporate" the sample into the analysis system.
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