Final answer:
Materials in the ERG's yellow- and blue-bordered sections are identified by UN/NA numbers, which instruct on initial isolation and protective distances. Bergey's Manual categorizes bacteria into Groups within Major Categories based on cellular and physiological characteristics, guiding the identification process through detailed observation and testing.
Step-by-step explanation:
In the Emergency Response Guidebook (ERG), materials that are included in the Table of Initial Isolation and Protective Distances are identified in the yellow- and blue-bordered sections. These sections utilize a numeric ID system for hazardous materials. The four-digit ID numbers, also known as the UN/NA numbers, correspond to specific substances and guide first responders to safety recommendations, including initial isolation and protective distances for spills or leaks. In the case of unknown materials, the ERG provides guidance based on the characteristics of the material observed at the scene.
When using Bergey's Manual for bacteria classification, the Major Category II is divided into several Groups based on cellular morphology and physiology such as Gram stain reactions, cell shape, presence of endospores, and physiological oxygen requirements. This information assists laboratory professionals in narrowing down the specific Group and subsequent identification of a bacterium. Following the guiding principles in Bergey's, including the use of tables like Table V.2, the process of identification involves meticulous observation of the bacterial characteristics through various tests, such as observing the cellular features on pre-stained slides using an oil immersion lens, performing chemical tests, and recording outcomes in an organized table.