Table 2. List of abbreviations used for allocation of the SOP’s category.

Short name	Meaning
F	fundamental
M or METH	analytical method
P	procedure to carry out a special investigation (project)
PROT	protocol
ORG	organizational document
WS	worksheet
A or APP	apparatus
SOP; P or PROJ	procedure to carry out a special investigation (project)
PROT	protocol describing a sequence of actions or operations
PERS	to describe personnel matters
RF	registration form (e.g., chemicals and samples)