TM 5-6630-215-12
GLOSSARY
Section I.
ABBREVIATIONS
ACS
American Chemical Society-reagent grade purity
APHA Standard
Standard Methods for the Examination of Water and
methods
Wastewater,
published jointly by the American Pub-
lic Health Association (APHA), the American Water
Works Association (AWWA), and the Water Pollution
Control Federation (WPCF).
It is available through
the Publication Office of the American Public
Health Association, Inc.,
1740 Broadway, New York,
New York 10019.
This book is the standard refer-
ence work for water analysis.
Most procedures
contained in this manual are based on Standard
Methods.
EPA
FTU
g
gr/gal
l
MDB
mg/l
ml
WQAS
WQAS - PM
WQAS - E
Concentrated
Dropping Bottle
Degree(s) Centigrade (Celsius)
Degree(s) Fahrenheit
Environmental Protection Agency
Formazin Turbidity Units.
Turbidity units of
measure based on a Formazin stock suspension.
grams
Grains per gallon (1 gr/gal = 17.16 mg/l (1 gr/gal
= 17.1 ppm)
Liter
Marked dropping bottle
Milligrams per liter -
procedures in this manual
use the currently acceptable expression of milli-
gram’ per liter rather than parts per million (ppm)
Milliliter -
approximately the same as a cubic
centimeter
Nanometer
Self-contained dropping bottle
Parts per million,
used interchangeably with
milligrams per liter (mg/l) for solutions less
concentrated than 700 ppm (17.16 mg/l = 17.1 ppm)
Water Quality Analysis Set
Water Quality Analysis Set - Preventive Medicine
Water Quality Analysis Set - Engineer
Section II.
DEFINITION OF UNUSUAL TERMS
Adjust:
To rectify to the extent necessary to bring into proper
operating range.
Aerobic:
Expose water to air by spraying or fountain methods.
Align:
To adjust specified variable elements of an item so as to
bring to optimum performance.
G-1
