Hach POCKET COLORIMETER II Instruction Manual page 22

Analysis systems
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Phosphorus, Reactive,
7.
Press:
ZERO/SCROLL
The instrument will turn on,
and the display will show
"- - - -"
, followed
by "0.00".
Remove the blank.
continued
8.
Place the ampule
containing the prepared
sample into the cell holder.
Cover the ampule with the
instrument cap.
1—22
9.
Press:
READ/ENTER
The meter will show
"- - - -"
, followed by the
results in mg/L phosphate
3–
(as PO
).
4

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