Final answer:
During the receipt of liquid oxygen (LOX), the exclusive procedure accomplished is Sampling to ensure quality control. Filtration is the method of physically removing microbes from samples, not killing them, and is achieved using HEPA filters.
Step-by-step explanation:
The correct answer to the question of which procedure is only accomplished during a liquid oxygen (LOX) receipt is D) Sampling. This procedure is exclusive to the receipt process of LOX. Other options such as Pressure testing, Purging, and Filtration may occur in different contexts but are not specific to LOX receipt. The unique aspect of sampling is that it is done to ensure the quality of the liquid oxygen being received is up to the required standards.
Filtration is the microbial control method that does not kill microbes or inhibit their growth but instead removes them physically from samples. Filtration can be used to purify air and other gases by trapping particles, including microbial organisms, as they pass through high-efficiency particulate air (HEPA) filters.