Hach DR/850, Procedures Manual, Page: 13 / 460

13
SECTION 1 CHEMICAL ANALYSIS INFORMATION
Abbreviations
The following abbreviations are used throughout the text of the procedure section:
Abbrev-
iation
Definition
Abbrev-
iation
Definition
°C degree(s) Celsius (Centigrade) MDL Method detection limit
°F degree(s) Fahrenheit MDB marked dropping bottle
ACS American Chemical Society reagent grade purity mg/L milligrams per liter (ppm)
APHA
Standard
Methods Standard Methods for the Examination of Water
and Wastewater.
1
1
Published jointly by the American Public Health Association (APHA), the American Water Works Association (AWWA), and
the Water Environment Federation (WEF). Order from Hach requesting Cat. No. 22708-00 or from the Publication Office of
the American Public Health Association. This book is the standard reference work for water analysis. Many procedures
contained in this manual are based on
Standard Methods.
µg/L micrograms per liter (ppb)
AV AccuVac mL (milliliter)-approximately the same as a cubic
centimeter (cc) or 1/1000 of a liter. Also
known as a “cc”.
conc
concentrated
MR medium range
CFR
Code of Federal Regulations
NIPDWR National Interim Primary Drinking Water
Regulations
DB
dropping bottle
NPDES National Pollutant Discharge Elimination
System
EDL Estimated detection limit PCB Poly chlorinated biphenyl
FAU Formazin Attenuation Units. Turbidity unit of
measure based on a Formazin stock suspension. SCDB self-contained dropping bottle
g grams TNT Test ‘N Tube™
gr/gal grains per gallon (1 gr/gal = 17.12 mg/L) TPH Total petroleum hydrocarbons
HR high range TPTZ (2,4,6-Tri-(2-Pyridyl)-1,3,5-Triazine)
L Liter. Volume equal to one cubic decimeter (dm
3
) ULR Ultra low range
LR low range USEPA United States Environmental Protection
Agency