Horiba Scientific 6561S-10C, Instruction Manual

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1
Set the meter as shown below.
2
Prepare the standard solutions.
Prepare the two types of standard solution to create F
-
concentration ratio
1:10.
For example, if the sample solution concentration is 250 mg/L, prepare
standard solutions of 100 mg/L and 1000 mg/L. This case is used as an
example in the following steps.
3
Prepare the first solution for calibration.
(1) Put 25 mL of 100 mg/L standard solution into a 100 mL beaker.
(2) Add 25 mL of TISAB.
(3) Stir the solution slowly with a magnetic stirrer.
Set the valence as shown in the
table on the right. Setting item Setting value
Valence -1
Always use new standard solution for calibration.
It is best to control the stirring speed so that the stir bar will
rotate 3 or 4 turns per second.
If swirling occurs on the surface, the stirring speed is too
fast. Reduce the speed to a level where swirling does not
occur.
Note Note
Beaker: 100 mL
(3)
Stir the solution slowly
with a magnetic stirrer.
(1) Standard solution (100 mg/L):
25 mL
(2) TISAB:
25 mL
Note Note