Hach DR2400 - Page 523

Nitrogen, Total Kjeldahl
Nitrogen, Total Kjeldahl
NitrogenTK_None_Other_NES_Eng_Ody.fm Page 3 of 6
13. When the timer
beeps, pour the contents
of each cylinder into
separate 10-mL sample
cells.
14. Wipe the blank and
place it into the cell
holder.
15. Touch Zero.
The display will show:
0 mg/L TKN
16. Wipe the prepared
sample and place it into
the cell holder.
Touch
Read.
Results will appear in
mg/L TKN.
17. Calculate sample
TKN as follows:
Where:
A = mg/L read from the display
B = g (or mL of water) sample
taken for digest
C = mL analysis volume of
digested sample
10 mL
10 mL
10 mL
Zero
10 mL
ppm TKN
75 A×
BC×
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