Apera Instruments PH60Z-MS User manual







ISO 9001: 2015



aperainst.com V2.1





|Temperature





ATTENTION



NEVER use the product when it’s freezing cold. Let it warm to room temperature

before using.



NEVER use your nger to touch the pH glass membrane or use other materials to

rub it. Doing so could generate static electricity and cause measurement errors. To

remove extra water on electrode, just shake it o or blot dry with Kimwipe or clean

tissues.



HandlethepHelectrodewithcare.The sensor tip is made of glass, and will break

if dropped or bumped against hard objects.

 

 

 

 

 

































Search “zentest” in Apple App Store or Google Play App Store to download the

latest App for your meter. Make sure the Bluetooth of your phone is turned on, then

go to ZenTest App, tap on the upper right corner, then select your meter to

connect (NOT the Demo device).

The content of this user mnual focus on how to operate through the meter's keypad.

For the guides on how to use the ZenTest App to achieve more functions, please

refer to the video tutorials by scanning the QR code below.









ShortPress — 1 second LongPress — 3 seconds

• When turned o, short press to turn on the tester; long press to

enter parameter setting.

• In calibration mode or parameter setting, short press to return to

measurement mode.

• In measurement mode, long press to turn o the tester, short press

to turn on/o backlight.

• In measurement mode, long press to turn on/off Bluetooth®

receiver. When it's turned on, will be flashing; when it's

connected to smartphone, will stay on.

• In parameter settings, short press to change parameter (Uni-

directional).

• Long press to enter calibration mode.

• In calibration mode, short press to conrm calibration.

• In measurement mode, when Automatic Hold is turned off, short

press to manually lock or unlock readings; when Automatic Hold is

triggerd, short press to unlock the reading.













































  







.





.

 



 



.

4.1.4 Wait for the reading to stabilize (when stays on the screen), then short press

again to nish the rst point calibration (pressing too early could lead

to Er2 error). "7.00" will be ickering and the meter will return to measurement

mode. Icon (the middle point) will appear at the bottom left, indicating a

successful 1-point calibration.

4.1.5 To calibrate the 2nd point, rinse o the electrode with pure water and remove

excess water. Dip the electrode into pH 10.01 solution and repeat Step 4.1.3 to

4.1.4. "10.01" will be ickering and (the high point) will show up next to

, indicating a successful 2-point calibration.

4.1.6 To calibrate the 3rd point, rinse o the electrode with pure water and remove

excess water. Dip the electrode into pH 4.00 solution and make a quick stir, then

repeat Step 4.1.3 to 4.1.4. "4.00" will be flickering and (the low point) will

display next to and , indicating a successful 3-point calibration.

4.2 NotesaboutCalibration

4.2.1 Always start calibrating with pH 7.00 first. Perform the 2nd and 3rd point

calibration immediately after the 1st point is finished. Do NOT turn off the

meter before you calibrate the second or third point. Otherwise, after you

restart the meter and perform calibration in pH 4.00 or pH 10.01, Er1 error

will be generated and you will have to calibrate with pH 7.00 again. For more

troubleshooting tips with calibration, refer to Section 14.





4.3HowOftentoCalibratetheElectrode?

The frequency that you need to calibrate your pH Electrode depends on many factors such

as the nature of test samples, condition of electrodes, and the requirement of the accuracy.

For high-accuracy measurements (≤ ±0.02pH), the electrode should be calibrated before

every test; For general-accuracy measurements (≥ ±0.1 pH), calibrate the electrode every 1-2

weeks.

Inthefollowingcases,theelectrodemustbere-calibrated:

• The electrode hasn’t been used for a long time or a dierent electrode is connected.

• After measuring strong acid (pH<2) or strong base (pH>12) solutions.

• After measuring uoride-containing solution and strong organic solution.

• There is a significant temperature difference between the test sample and the buffer

solution.

    

   





















  

















  















  























temperature.









The meter is only as accurate as the electrode is clean. Always thoroughly rinse o

the electrode before and after each measurement with distilled water or deionized

water in a container or with a wash bottle.

To remove excessive water, just shake them o or blot dry with Kimwipe or lint-free

cloth. Neverrub the glass membrane of the electrode. Otherwise static electricity

will be generated and cause measurement error.

For tough contaminants staying on the glass membrane or junction, refer to the

following table for cleaning procedures:

TypeofContamination CleaningAgent SoakingTime

Lipophilic substances, e.g.

oil and fat deposits Home dish soap water 5 – 10 minutes

Proteins Apera Electrode Cleaning

Solution (SKU: AI1166) 30 – 60 minutes

Inorganic coatings such as

hydrocarbons

commercially available

glass cleaning solutions 5 – 10 minutes

Hard, scale-type calcium

deposits

Apera Electrode Cleaning

Solution (SKU: AI1166) 5 – 10 minutes



5.1HowtoTakepHMeasurement

5.1.1 Short press to power on. Remove the storage sleeve and rinse the electrode

in distilled/deionized water, then shake o the excess.

5.1.2 Submerge the electrode into your sample solution at least 1 inch deep, make a

quick stir and hold still. Record the reading as the pH measurement when it is

stabilized ( comes up and stays on screen).





 

5.2HowtoTakepHMeasurementinSmall-Volume

5.2.1 The LabSen 246-5 pH electrode can measure as low as

60 µL of water sample with the use of the semi-micro

container included in the test kit. Make sure to add in your

sample solution to the level where the junction (the white

spot) of the electrode can be submerged.

junction





 







 







 









Symbol Parameter Setting Contents Content Factory

Default

P1 Temperature Unit ˚C – ˚F ˚F

P2 Automatic Hold 5-20 seconds – O O

P3 Automatic Backlight O 1-8 minutes – O 1

P4 Automatic Power O 10-20 minutes – O 10

P5 pH Buer Series Selection USA – NIST USA

P6 pH Resolution 0.1 – 0.01 0.01

P7 pH Calibration Reminder H-hours D-Days

(set up in ZenTest App) /

P8 Back to factory default No – Yes No

TypeofContamination CleaningAgent SoakingTime

Alkaline coatings Apera Electrode Cleaning

Solution (SKU: AI1166) 5 – 10 minutes

Acidic coatings 0.1M NaOH solution 5 – 10 minutes

Sulde-containing

substances Thiourea

30– 60 minutes, leave until

junction discoloration

disappears.

Unknown substances Apera Electrode Cleaning

Solution (SKU: AI1166) 30 – 60 minutes

Use a soft brush to help thoroughly clean o the contaminants. After the cleaning

procedure, the pH electrode should always be soaked in 3M KCl solution for 12-24 hours

for rehydration. A re-calibration is also necessary before a new pH measurement.

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