Hach BioTector B3500e User Manual page 82

pH Test, Phase 3:
P H T E S T
1 < R A N G E , V A L V E
2 M O D E
3 S T A R T T E S T
4 T A K E S A M P L E
5 C O N T I N U E
6 S T O P T E S T
T I M E
P H A S E
M F C = 0 . 0 l / h
T E S T T I C
W H E N F I N I S H E D ,
F R O M M E N U .
At this phase, the TIC acid and sample are added into the reactor and mixed together. The system then
pauses to allow the pH to be tested. The user now has 3 options:
4. Take Sample. It can be difficult to take a representative sample as the base reagent is injected prior to
this test. When the tubing at the changeover port of the Reactor Valve is removed, it is recommended that
a few drops of liquid is discharged manually from the reactor by tipping this tubing gently down and then
measure the pH of the mixture with a pH paper.
5. Continue To Next Phase. If this is selected, the program continues to the next phase.
6. Stop Test. If this is selected, the program jumps to the reactor purge phase.
pH Test, Phase 4:
P H T E S T
1 < R A N G E , V A L V E
2 M O D E
3 S T A R T T E S T
4 T A K E S A M P L E
5 C O N T I N U E
6 S T O P T E S T
T I M E
P H A S E
M F C = 0 . 0 l / h
T E S T B A S E
W H E N F I N I S H E D ,
F R O M M E N U .
At this phase, the base is added to the solution in the reactor and mixed together. The program then pauses
to allow the pH to be tested. The user now has 3 options, which are the same as in the previous phase.
0 9 : 1 7 : 2 8
T O N E X T P H A S E
0 s
P A U S E D
C O 2 =
p H . E X P E C T E D
S E L E C T
0 9 : 1 7 : 2 8
T O N E X T P H A S E
0 s
P A U S E D
C O 2 =
p H . E X P E C T E D
S E L E C T
1 2 - 0 9 - 0 2
1 , S T R E A M
T I C + T O C
1 5 0 . 8 p p M
p H < 2 .
N E X T A C T I O N
1 2 - 0 9 - 0 2
1 , S T R E A M
T I C + T O C
1 5 0 . 8 p p M
p H > 1 2 .
N E X T A C T I O N
1
1
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