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7.
Immerse the ion electrode in sample solution after the additive standard solution and tap
.
The measurement starts.
When the measurement is completed, concentration of the sample and the measuring
condition are displayed as measurement results.
Tap
to return to the ION standard addition mode screen.
7.1.6 Known Addition Method (Double) Measurement
This mode is used to obtain the concentration of the ion species under measurement by
adding a small amount of the target ions to the sample solution twice, thus increasing the
ion concentration of the target component, and then measuring the change in electric
potential at that time.
Measurement condition setting
1.
Tap
on the right of the Known addition method item in the ION standard addition
mode screen.
2.
Tap
on the right of the Known add. method (Double) item.
3.
Set the measurement condition in the Known add. method (Double) screen.
Enter sample volume, concentration of the additive standard solution, volume of the 1st
and 2nd standard solution and ion valency of measurement ion.
4.
Tap
after complete setting.
The MEAS screen is displayed.
To return the set value to default, tap the
Setting item and range
Concentration of the additive standard solution: 0.1 mg/L to 19000.0 mg/L
Volume of the additive standard solution 1, 2:
Ion valency:
Sample volume:
Refer to the instruction manual of the ion electrode for the ion valency.
78
.
0.01 mL to 1000.00 mL
+2, +1, 1, 2
1.0 mL to 19999.9 mL
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