User Guide

Instruction Manual CyberScan DO5000
76
6.2 Biological Oxygen Demand (BOD) Measurement
Measure - BOD
setup
 Touch to begin measurement
or
start
Touch to access standardize mode std 
std
start
mg/L
8.21
STABLE
STND Not Standardized
August 12, 2002 9.32am
ID# ATC
autocal salinity
mmHg
25.3°C
ON 0.0 ppt
732
0:00
To measure BOD, a sample is seeded and incubated in the dark at
20°C for five days. The dissolved oxygen concentration is then
measured and subtracted from the initial, pre-incubation, dissolved
oxygen concentration. The difference is a measure of the biochemical
oxygen demand, or BOD of the sample.