Hach BOD Direct plus Anleitung Seite 23

 1 x BOD base unit with integrated bottle rack
 6 x BOD sensor (material ABS)*
 6 x BOD bottles
 6 x seal cup
 6 x magnetic stir bar
 3 x battery, alkali manganese ( C / LR14 )
 1 x retaining tube for batteries
 1 x stirrer drive
 1 x mains adapter + primary adapter plug
 1 x Y-cable
 1 x USB cable
 1 x nitrification inhibitor
 1 x potassium hydroxide solution (KOH solution)
 2 x overflow volumetric flasks (157 ml, 428 ml)
 1 x Allen key
 1 x operating manual
 1 x EC Declaration of Conformity
* for non-aqueous samples: check material compatibility with the sample prior to use.
4 Information about the method
4.1 Sample preparation / brief summary
WARNING! Observe the SAFETY INSTRUCTIONS at the beginning of the manual!
• Estimate the measurement range of the sample to be tested and the sample volume as indicated
in section 6.1.
• If necessary, pre-treat the sample as indicated in 6.2 (e.g. adjust pH value, filtrate)
• Measure the sample volume precisely with the overflow volumetric flask and pour into the BOD
bottle (use a funnel, if necessary)
• If necessary, add the nitrification inhibitor as indicated in section 6.1
• Place the magnetic stir bar in the BOD bottle
• Fill the seal cup with 3 - 4 drops of KOH solution and place the seal cup in the test bottle
• Screw the BOD sensors on the test bottles
• Hang the sample in the bottle rack
• Start the test (see section 5)
• Incubate the sample according to specifications (e.g. BOD
BOD Direct plus_BMU_2 03/2016
at 20 °C).
5
GB
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