Hach BODTrak II User Manual page 4

Table of Contents
7.4 Completion steps for all procedures ......................................................................................................................................... 12
Section 8 Determination of results
8.1 Simplified sample results .......................................................................................................................................................... 14
8.2 Hach Standard Method results ................................................................................................................................................. 14
Section 9 Typical curves
Section 10 Special considerations
10.1 Sample dilution ....................................................................................................................................................................... 15
10.2 Sample seeding ...................................................................................................................................................................... 16
10.3 Sample temperature ............................................................................................................................................................... 16
10.4 Toxic materials ........................................................................................................................................................................ 16
10.5 Chlorine ................................................................................................................................................................................... 16
10.6 pH effect .................................................................................................................................................................................. 16
10.7 Supersaturation ....................................................................................................................................................................... 16
Section 11 Maintenance
11.1 Cleaning .................................................................................................................................................................................. 17
11.2 Storage ................................................................................................................................................................................... 17
Section 12 Troubleshooting
12.1 Incorrect BOD curves .............................................................................................................................................................. 17
12.2 High oxygen demand .............................................................................................................................................................. 18
12.3 Nitrification .............................................................................................................................................................................. 18
12.4 Excessive time lag .................................................................................................................................................................. 19
12.5 Sample temperature ............................................................................................................................................................... 19
12.6 Bottle leak ............................................................................................................................................................................... 19
Section 13 Replacement parts and accessories
13.1 Replacement parts .................................................................................................................................................................. 19
13.2 Required reagents .................................................................................................................................................................. 19
13.3 Optional reagents .................................................................................................................................................................... 19
13.4 Accessories ............................................................................................................................................................................. 20
2
................................................................................................................................. 14
....................................................................................................................................................... 15
................................................................................................................................. 15
.........................................................................................................................................................17
................................................................................................................................................ 17
.................................................................................................... 19