SRT standard rate disposable permeation tubes generate moderate concentrations of high vapor pressure compounds. These compounds include SO2, H2S, NH3, Cl2, etc. Additionally, SRT permeation tubes can generate very low concentrations of low vapor pressure compounds such as carbon disulfide, methylene chloride and nitric acid. Typical emission rates yield concentrations of 1 to 10 ppm depending on the compound, operating temperature and dilution flow rate.

SRT-2 disposable permeation tubes can generate moderate concentrations of high vapor pressure compounds such as Cl2, NO2 and NH3. These tubes can be used at temperatures up to 50°C. Typical emission rates yield concentrations of sub-ppm to 5 ppm depending on the compound, operating temperature and dilution flow rate.

ELHRT permeation tubes are used for generating moderate concentrations of low vapor pressure compounds such as C2H5SH, benzene, and water, and for generating high concentration mixtues of SO2, CH3SH and other moderate vapor pressure compounds. Typical emission rates yield concentrations of 1 to 10 ppm, depending on the compound, operating temperature and dilution flow rate.

ELSRT permeation tubes are used for generating moderate concentrations of high vapor pressure compounds such as SO2, H2S, NH3, and Cl2, and for generating very low concentrations of low vapor pressure compounds such as benzene, acrolein, and water. Typical emission rates yield concentrations of 1 to 5 ppm, depending on the compound, operating temperature and dilution flow rate.