Type

Characteristics

Detection limit

HC-2

be used in coal gas

H₂S, COS, CS₂   0.03ppm

HC-3

be used in natural gas

H₂S, COS, CS₂, RSH, RSSR   0.1ppm

HC-4

be used in propylene

COS  0.02ppm
H₂S  0.1ppm

HC-5

higher precision

H₂S, COS, CS₂   5ppb

HC-6

detect sulfur and phosphor

H₂S, COS, CS₂, PH3   0.03ppm
RSH, RSSR    0.1ppm

HC-11

detect total hydrocarbon and benzene

Benzene  10ppb
Total hydrocarbon  5ppm