Abbreviations used

Abbreviations Used in the Table (—2), doubly ionized anion... 

Abbreviations Used in the Table FP, freezing point BP, boiling point... 

Whereas analytical techniques are often abbreviated using capital letters, Eniyclopedia style is to use the lower case. 

Fig. 1. Widely accepted abbreviations used for sibcone groups.

Quantity or dimension SI unit SI unit symbol ( abbreviation ) Use roman (upright) tyj)e... 

Table 13.16 provides the list of symbols and abbreviations used. 

Table 4 Miscellaneous abbreviations used for rubbery materials...

Table 1 is a compilation of chemical and physical properties data for selected atmospheric contaminants. This information is useful for evaluating pollution problems. The following are abbreviations used in the table. 

To use the volume effectively, the reader should first review the Glossary of Terms section immediately preceding the first chemical entry. This section contains precise definitions used for certain parameters where data have been obtained for each chemical. A review of these terms will help the reader interpret certain information. In addition, a list of abbreviations used throughout the volume is also provided in the front section of the handbook. 

Threshold lamit Value - The term refers to toxicity by inhalation. The abbreviation used is TLV. The TLV is usually expressed in units of parts per million (ppm) - i.e., the parts of vapor (gas) per million parts of contaminated air by volume at 25 °C (77°F) and atmospheric pressure. For chemicals that form a fine mist or dust, the concentration is given in milligrams per cubic meter (mg/m ). The TLV is defined as the concentration of the chemical in air that can be breathed for five consecutive eight-hour workdays (i.e., 40 hours per week) by most people without suffering adverse health effiects. This is the definition given by the American Conference of Governmental Industrial Hygienists. 

In addition to the abbreviations used in SI, the following are employed in air conditioning work ... 

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