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;

Phosphine - PH3 

Hazard:                        Flammable      Will Explode LEL 1.79%

Classification:            Health                Extremely toxic

Synonyms:                 Celphos, Delicia, Detia, Hydrogen Phosphide, Phosphoretted Hydrogen, Phosphorus Trihydride

Exposure limits:       (OSHA) PEL\TWA: 3 ppm

                                    (ACGIH) STEL: 1 ppm

                                    (OSHA) IDLH: 50 ppm  

Industries:                 Chemical intermediate, doping agent, pesticide, fumigant   

Phosphine is a colorless, flammable highly toxic gas with a fishy or garlic-like odor. Phosphine acts on the central nervous system and lungs leading to pulmonary edema. Symptoms like faintness, vomiting, headache, tightness in the chest may appear rapidly after exposure. Even a short exposure to an acute amount of phosphine can lead to chronic neurological problems. It should also be recognized that phosphine is highly flammable and may spontaneously ignite in air or even explode when mixed with oxygen. Phosphine coming in contact with oxidizers, halogenated hydrocarbons, or even aluminum and copper may cause the same. It is for this reason that extreme care must be adhered to whenever working with or around phosphine.   

Effects of Various PH3 Levels  

Phosphine Level in PPM                   Resulting Conditions on Humans

.3                                                  OSHA Permissible Exposure Limit (PEL).

1                                                   OSHA Short Term Exposure Limit (STEL).

35                                                 Diarrhea, nausea, respiratory distress.

500                                               Lethal after 45 minutes.

2000                                             Lethal after 1-3 minutes.