Apera Instruments 60-Z Series User Manual

- 6 -
pH Ca li bration
Calibration Steps
1) Short press to turn on the meter; rinse the probe in distilled water, shake the meter in the air and use tissue
paper to dap off excess water (never rub or wipe the sensor tip).
2) Pour certain amount of pH 7.00 and pH 4.00 buffer solution into the corresponding calibration bottles (to about half
volume of the bottle);
3) Long press to enter calibration mode; Short press to exit.
4) Place the probe in pH7.00 buffer solution, shake it for a few seconds, and allow it to stand still in the buffer solution
until a stable reading is reached. When stable icon stays on the LCD screen, short press to complete 1
st
point calibration and the tester returns to measurement mode. Indication Icon will appear at the bottom left of the
LCD screen.
5) Rinse the probe in distilled water and dry it. Long press to enter calibration mode to perform 2
nd
point of calibration.
6) Place the probe in pH 4.00 buffer solution, shake it for a few seconds, and allow it to stand still in the buffer solution.
When stable icon stays on the LCD screen, short press to complete 2-point calibration and the tester returns
to measurement mode. Indication icon will appear at the bottom left of the LCD screen.
7) If necessary, rinse the probe in distilled water and dry it, and place the probe in 10.01 buffer solution (sold
separately) to complete 3
rd
point of calibration according to the steps in 6), will appear at the bottom
left of the LCD.
Notes
1) Tester will automatically recognize pH buffer solution. Users can perform one-point, two-point, or three-point
calibration. For the 1
st
point calibration, only 7.00 pH/6.86 pH solution can be used. Then use other buffer
solutions to conduct 2nd or 3rd point calibration. Perform the 2
nd
point calibration (4.00 pH) immediately after the
1
st
point. Do NOT turn off the meter before you perform 2
nd
point calibration. If the meter is turned off after 1
st
point calibration, users will need to restart the calibration process with the 7.00 pH or 6.86 pH first and the 2
nd
point following after. Otherwise, Er1 will occur.
2) The tester will automatically recognize 5 kinds of pH buffer solutions in both USA and NIST series of standards.
Refer to the table below:
Calibration
USA Series
NIST Series
Calibration Indication
Icon
Recommended
Accuracy and
Range
1-point
1) 7.00 pH
1) 6.86 pH
Accuracy ≥ 0.1 pH
2-point
1) 7.00 pH
2) 4.00 or 1.68 pH
1) 6.86 pH,
2) 4.01 pH or 1.68 pH
Measurement
Range＜7.00 pH
1) 7.00 pH
2) 10.01 or 12.45 pH
1) 6.86 pH,
2) 9.18 pH or 12.45 pH
Measurement
Range＞7.00pH
3-point
1) 7.00 pH
2) 4.00 or 1.68 pH
3) 10.01 or 12.45 pH
1) 6.86pH
2) 4.01 or 1.68pH,
3) 9.18 pH or 12.45 pH
Wide Measurement
Range

Apera Instruments 60-Z Series Specifications

General

Brand	Apera Instruments
Model	60-Z Series
Category	Test Equipment
Language	English