Hydrogen sulfide (H2S) gas with the feature of colorless, highly toxic, acidic gas. Moreever, with a special smell of the rotten eggs, it will damage the human sense of smell , even with the low H2S gas concentration. But when the hydrogen sulfide (H2S) concentration is higher, will not smell the odor, because of the high H2S concentration will paralysis human nerve. So, if detect this H2S gas with human nose, it will be a fatal method.

H2S is also a kind of two weak acid. When temperature is 20℃, 1 volumes of water can dissolve 2.6 volumes hydrogen sulfide, so formation of a water solution called hydrogen sulfate, concentration is 0.1mol/L.

If mix hydrogen sulfide with air or oxygen at an appropriate ratio(4.3%~46% ), it will explode.

So, in the presence of hydrogen sulfide (H2S) working place should be equipped with the Hydrogen sulfide (H2S) gas detector, this could detect the gas concentration and people could take some measures to protect human safety.

OC-903 portable H2S gas detector with the origianl imported sensor, respond swiftly, high accuracy, good stability and repeatability. This model also installed with the internal pump, could sampling in short time and display accuracte value. Our engineer also design this portable gas detector with the data logger function, with the software, the historic data could be checked on the gas detector, also could be transmitted to the computer , if you need, also could save the data as the Excel files.