EST-10-Ⅱ-C2H4 Ethylene detector is a portable, handheld gas concentration measuring instrument with natural diffused gas detection function. It can be connected with sampling pump and equipped with two-stage sound and light alarm to store data. It has been designed and produced in accordance with relevant national standards and alarm design standards. Ethylene detector can be used in ethylene preservation, fruit storage, fruit ripening, research facilities, chemical plants, and cold storage