The physical status

The physical status of the samples determines the choice of the analytical approach. In particular, liquid samples can be processed by nebulization... 

Skeletal muscle is specialized to perform intermittent mechanical work. As described previously, the energy sources that provide ATP for muscle contraction depend on the degree of muscular activity and the physical status of the individual. During fasting and prolonged starvation, some skeletal muscle protein is degraded to provide amino acids (e.g., alanine) to the liver for gluconeogenesis. 

Yu, D.G., Shen, X.X., Zhang, S.F., Zhu, L.M., Branford, W.C., 2009. Applications of polarization microscope in detemtining the physical status of API in the wet spinning drug-loaded fibers, in ICBBE, The 2nd International Conference. Bioinformatics Biomedical Engineering, 1375—1378. lEE, New York. 

These cover a wide range of formulation types from ointments to nonmetered aerosols. The physical status of an emulsion can be critical. This is tested by temperature cycling. Where appropriate the homogeneity of the content is also monitored by sampling the top, middle, and bottom of the container. 

---