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- 6 -

 

6  pH Calibration 

6.1  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. 

6.2  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 

 

Summary of Contents for 60-Z Series

Page 1: ...1 60 Z Series Smart pH Tester pH Temp ORP Instruction Manual PH60 Z pH Tester PH60S Z Spear pH Tester PH60F Z Flat pH Tester www aperainst de V1 0...

Page 2: ...Probe Replacement 11 13 Warranty 11 ATTENTION 1 You may find a few drops of water in the probe cap These water droplets are added to maintain the sensitivity of the pH sensor before the product leave...

Page 3: ...splay dial display 3 Graph Mode digital display graph display 4 Table Mode digital display real time measurement and history display Calibration Press buttons to operate Operate on smartphone followin...

Page 4: ...uetooth receiver When turned on will be flashing when connected to smartphone will stay on 2 In parameter setting short press to change parameter Uni directional 1 Long press to enter calibration mode...

Page 5: ...the storage solution before using b When the tester is not in use we recommend adding one to two drops of tap water to the probe cap and close the cap be careful not to add too much water This way th...

Page 6: ...y rinse the probe in distilled water and dry it and place the probe in 10 01 buffer solution sold separately to complete 3rd point of calibration according to the steps in 6 will appear at the bottom...

Page 7: ...pressed before measurement is fully stable Wait for to come up and stay on screen before pressing During calibration readings being unstable for over 3 minutes 1 Please check whether pH electrode is...

Page 8: ...lid medium When performing such tests pay attention to insert probe evenly and be careful to prevent probe from damage If the medium is too hard such as meat or fruits please bore a small hole with a...

Page 9: ...screw the original probe and install the ORP60 DA probe then the tester will automatically switch to ORP measurement mode Refer to Section 14 for how to replace a probe Rinse the probe in distilled wa...

Page 10: ...on will be turned off Long press to manually shut down the meter 5 pH Calibration Reminder P07 set X hours H Or X days D in ZenTest mobile app settings Parameter pH Calibration Reminder On the meter y...

Page 11: ...onsibility of APERA INSTRUMENTS Europe GmbH for a period of TWO YEARS SIX MONTHS for the probe from the delivery This limited warranty does NOT cover any damages due to accidental damage unauthorized...

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