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美國ESC Environmental Sensors Company   
美國ESC 董事長Lawrence D. Locker博士自1976年起就開始對美國職業安全法律所管制的有毒蒸氣的測量方法進行研究，并建立了經美國工業衛生協會(AIHA)認可的工業衛生測試實驗室，是這一領域的著名專家。ESC(環境傳感器公司)開發生產的系列室內空氣質量檢測儀，符合美國OSHA和NIOSH的要求，性價比高且簡單易用，在美國和歐洲擁有眾多的用戶，近年在中國市場的銷量也迅速增長。
Environmental Sensors offers a complete line of analytical instruments for chemical vapor detection and monitoring. Our instruments are designed to monitor indoor air quality where varying amounts of the targeted gas are expected to be present.

These instruments are often used for personal or area monitoring to meet OSHA or NIOSH regulations. All of these meters meet or exceed OSHA's accuracy requirements.

Our chemical vapor meters are simple and easy to use. With the touch of a button, a user can view a real time, digital measurement of a particualar chemical vapor in Parts Per Million.