l The case made of high intensity PC and antistatic rubber makes the instrument not only sturdy and durable but also compact and light-weight and its Protection Classification can exceed IP65;

l The instrument is equipped with most advanced Li-polymer rechargeable battery, and the ultra-high-capacity battery can ensure long-time continuous operation of the instrument with the longest time up to 150 hours;

l The extra-loud buzzer, extra-bright LED, and high capacity vibrating motor ensure that the users can get the alarm signals of the instrument timely and effectively in any severe working environment.

l The ultra-large LCD screen is equipped with ultra-bright backlight, convenient for reading;

l The GS10 instruments can not only display the concentration of a dangerous gas in real time but also calculate the TWA and STEL values of a toxic gas and display the results on the LCD as per corresponding instructions;

l The function of 1,000-hour data recording enables you to better learn about the change of its work environment and its performance

l The internal infrared communication port enables you to read the data and modify the instrument settings conveniently via your computer;

Hazard:                                 Flam                  Will explode; LEL 4.0%

Classification:  Health       Extremely toxic

Oxidizing agent

Synonyms:                           Hydro sulfuric acid, sewer gas, sour gas, rotten egg smell

Exposure limits:                 (OSHA)     PEL\TWA: 20 ppm

(ACGIH)    STEL: 5 ppm / 15 min.

(OSHA)     IDLH: 300 ppm / 30 min

Industries:                            Oil and Gas industries (complete from drilling to refining), pulp and paper, and waste water treatment           

Hydrogen sulfide is a colorless gas that is known by its characteristic rotten egg like odor. It appears naturally as a byproduct of decomposition. One of the drawbacks to trusting the senses (olfactory) for protection against hydrogen sulfide is that prolonged exposure to the gas renders the sense of smell inoperative.

Hydrogen sulfide is a highly toxic gas. It reacts with the enzymes in the blood stream which inhibit cell respiration. in other words, high concentrations of hydrogen sulfide can shut off the lungs. Low concentration exposure to the gas can burn the respiratory tract and cause swelling around the eyes.

Effects of Various H2S Levels

Hydrogen Sulfide Level in PPM                   Resulting Conditions on Humans

        0.13                                                          Minimal perceptible odor 

        4.60                                                          Easily detected, moderate odor        

        10                                                             Beginning eye irritation.   

        27                                                             Strong, unpleasant odor, but not intolerable.   

        100                                                           Coughing, eye irritation, loss of sense of smell after 2 to 5 minutes.

        200-300                                                   Marked conjunctivitis (eye inflammation) and respiratory tract irritation after one hour of exposure  

        500-700                                                   Loss of consciousness, cessation (stopping or pausing) of respiration, and death. 

       1000-2000                                               Unconsciousness at once, with early cessation of respiration and death in a few minutes. Death may occur evenif

                                                                          individual is removed to fresh air at once.