Calibration
IV-14
Thermo Scientific Orion 2117HL High Level Chloride Analyzer User Guide
Span Check
Procedure
The Thermo Scientific Orion 2117HL chloride analyzer remains in sample
mode during the entire procedure.
1. Fill flow cell to calibration level (V
0
, approximately 95 mL).
2. Record the concentration displayed when the reading is reasonably
stable (C
0
).
3. Add standard 1, volume V
1
, with concentration C
1
.
4. When the reading is reasonably stable, record the concentration (C
S
).
5. The recorded value should be within ±10% of the calculated value
according to:
C
S
= (C
0
x V
0
+ C
1
x V
1
) / (V
0
+ V
1
)
• C
1
should be the chloride concentration actually in the
standard bottle.
