實驗室服務員主要負責以下職務－ (a) 協助及執行抽樣、流量測量及／或簡單測試工作； (b) 協助收集樣本，並處理和運送儀器／設備的體力勞動工作； (c) 協助保持所有測試設備運作正常及清潔； (d) 保持實驗室及工作地方整潔；以及 (e) 分配職務予下屬人員，並督導他們工作。 (註：或須不定時工作及在工地、戶外和全港任何地方工作。)

A Laboratory Attendant is mainly deployed on – (a) assisting in and performing sampling flow, gauging and/or simple testing work; (b) assisting in taking samples and performing manual duties on the handling and transportation of instrument/equipment; (c) assisting in keeping all equipment for tests in working order and clean condition; (d) maintaining the laboratory and working areas in a clean and orderly condition; and (e) allocating duties and supervising the work of subordinate staff. (Note: Laboratory Attendant may be required to work irregular hours, on site, outdoors and anywhere in the territory)