b) Shot system: On small scale, commodities can be treated using shot method with ethylene liberated from ethephon. A calculated amount of ethephon in stainless steel bowl is placed around the room. The fruits are stacked in the room and sodium hydroxide is added to ethephon and all ventilation to the room is then blocked. When sodium hydroxide reacts with ethephon, ethylene gas is released that ripens the fruits, Precaution should be taken while handling sodium hydroxide and ethephon as these are corrosive. Safety glasses and rubber gloves should be used while their handling.