Test concentration:
H2S: 5ppb~250ppb (100ppm gas source)
Cl2: 5ppb~250ppb (100ppm gas source)
H2S: 100ppb~5000ppb (1.0% gas source)
NO2: 50ppb~2500ppb (0.1% gas source)
SO2: 50ppb~2500ppb (0.1% gas source)
SO2: 1ppm~50ppm (2.0% gas source)
Applicable standards: GB/T 2423.19, GB/T 2423.20, GB/T 2423.33, GB/T 2423.51, GB/T 9789, IEC60068-2-42, IEC60068-2-43, IEC60068-2-60, DIN 50018, ISO 21207 and so on.