Used in this part are abbreviations and symbols of units of measure. These are defined as follows:
A-ampere
g-gram
Hz-hertz
J-joule
K-degree Kelvin
kg-kilogram
m-meter
m3-cubic meter
mg-milligram-10-3 gram
mm-millimeter-10-3 meter
Mg-megagram-106 gram
mol-mole
N-newton
ng-nanogram-10-9 gram
nm-nanometer-10-9 meter
Pa-pascal
s-second
V-volt
W-watt
&-ohm
[MICRO]g-microgram-10-6 gram
Btu-British thermal unit
°C-degree Celsius (centigrade)
cal-calorie
cfm-cubic feet per minute
cu ft-cubic feet
dcf-dry cubic feet
dcm-dry cubic meter
dscf-dry cubic feet at standard conditions
dscm-dry cubic meter at standard conditions
eq-equivalent
°F-degree Fahrenheit
ft-feet
gal-gallon
gr-grain
g-eq-gram equivalent
hr-hour
in-inch
k-1,000
l-liter
lpm-liter per minute
lb-pound
meq-milliequivalent
min-minute
ml-milliliter
mol. wt.-molecular weight
ppb-parts per billion
ppm-parts per million
psia-pounds per square inch absolute
psig-pounds per square inch gage
°R-degree Rankine
scf-cubic feet at standard conditions
scfh-cubic feet per hour at standard conditions
scm-cubic meter at standard conditions
sec-second
sq ft-square feet
std-at standard conditions
CdS-cadmium sulfide
CO-carbon monoxide
CO2-carbon dioxide
HCl-hydrochloric acid
Hg-mercury
H2O-water
H2S-hydrogen sulfide
H2SO4-sulfuric acid
N2-nitrogen
NO-nitric oxide
NO2-nitrogen dioxide
NOX-nitrogen oxides
O2-oxygen
SO2-sulfur dioxide
SO3-sulfur trioxide
SOX-sulfur oxides
A.S.T.M.-American Society for Testing and Materials
40 C.F.R. §60.3