Calibration
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BPD17 pH / Redox Monitor
Operating Guide
If only a single point calibration is required then the following does not need to be carried out.
pH Slope Calibration
The pH slope calibration enables the user to adjust
the sensor slope until the displayed reading matches
the known input. To activate the function, select “pH
Slope Calibration” and press enter.
The current sensor reading can be seen in the pop-up
window and is adjusted by pressing the up and down
arrows.
When the reading is correct press the enter button to
store the calibration, update the sensor offset value
and the sensor condition status located further down
in the menu.
The slope limits are 80% to 110%
/ – Adjust the Reading Up or Down
EXIT
– Cancel
– Save Calibration
Buffer Solutions
The following table gives the LTH buffer solution values. NB. Buffer solutions should be prepared and
used in accordance with the instructions supplied with them.
pH variation against temperature
Temperature (C)
LTH 4pH Buffer LTH 7pH Buffer LTH 9pH Buffer
10 4.00 7.07 9.21
15 4.00 7.04 9.14
20 4.00 7.02 9.06
25 4.00 7.00 9.00
30 4.01 6.99 8.96
35 4.02 6.98 8.92
40 4.03 6.97 8.88
50 4.05 6.96 8.83
60 4.08 6.96 8.81
LTH Buffer Solutions Ordering Information
Type No Part No Description
SB-052-1610 138/199 4pH Buffer standard colour coded Red, 500ml.
SB-168-1610 138/200 7pH Buffer standard colour coded Clear, 500ml.
SB-054-1610 138/201 9pH Buffer standard colour coded Blue, 500ml.
SR-009-1610 138/175 124mV Redox solution. 500ml
SR-022-1610 138/176 358mV Redox solution. 500ml
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