Hach-Lange BODTRACK II User Manual - Manual (Page 4)

Hach Standard Method procedure ...................................................................................................................................................14
Completion steps for all procedures ................................................................................................................................................15
Determination of results
.........................................................................................................................................................17
Simplified sample results .................................................................................................................................................................17
Hach GGA (glucose/glutamic acid) results ......................................................................................................................................17
Hach Standard Method results ........................................................................................................................................................17
Typical curves
...............................................................................................................................................................................17
Special considerations
............................................................................................................................................................18
Sample dilution ................................................................................................................................................................................18
Sample seeding ...............................................................................................................................................................................18
Sample temperature ........................................................................................................................................................................18
Toxic materials.................................................................................................................................................................................18
Chlorine ............................................................................................................................................................................................19
pH effect...........................................................................................................................................................................................19
Supersaturation ................................................................................................................................................................................19
Maintenance
...................................................................................................................................................................................19
Clean the instrument ........................................................................................................................................................................19
Clean the sample bottles .................................................................................................................................................................19
Clean the stir bars and seal cups .....................................................................................................................................................19
Storage ............................................................................................................................................................................................19
Troubleshooting
..........................................................................................................................................................................20
Incorrect BOD curves.......................................................................................................................................................................20
High oxygen demand .......................................................................................................................................................................20
Nitrification .......................................................................................................................................................................................21
Excessive time lag ...........................................................................................................................................................................21
Sample temperature ........................................................................................................................................................................21
Bottle leak ........................................................................................................................................................................................21
Replacement parts and accessories
...............................................................................................................................21
Replacement parts ...........................................................................................................................................................................21
Required reagents ...........................................................................................................................................................................22
Table of Contents
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