FAQ

Water Quality Meter

Can 86505 measure brine water of cheese?
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Can 86505 measure brine water of cheese?(10 KB)

Can I set up my 8403 into non-sleep mode?
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Can I set up my 8403 into non-sleep mode?(12 KB)

Can AZ8305 measure the salinity solution which is not for seawater?
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Can AZ8305 measure non-seawater salinity solutions(12 KB)

Can I use Low Ionic Strength pH pen to measure higher Ionic strength solution?
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Can the low ion pH pen measure higher ion solution(11 KB)

How to solve the wrong message E21 of 86031?
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How to solve the wrong message E21 of 86031?(38 KB)

What dose the % unit mean for DO value?
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What dose the % unit mean for DO value?(12 KB)

What is the correct testing liquid upper limit for 86021?
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The correct test liquid upper limit of 86021(70 KB)

What is the life time for D.O.probe?
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What is the life time for D.O.probe?(12 KB)

What to do when display shows pH 7 at every calibration points?
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The display shows pH 7 at each calibration point(42 KB)

What to do when my ORP pen is in big deviation?
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What to do when my ORP pen is in big deviation?(12 KB)

What is the 8601 probe storage buffer?
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What is the 8601 probe storage buffer?(64 KB)

What's the procedure of pH calibration? When should I re-calibrate my pH meter?
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pH calibration procedure(12 KB)

Why 8373 has no ppt display?
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Why 8373 has no ppt display?(100 KB)

Can I use 35ppt NaCL buffer to calibrate 8372?
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Can I use 35ppt NaCL buffer to calibrate 8372?(83 KB)

Can I manually input the cell constant of my EC probes into your benchtop EC meters?
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EC probes into your benchtop EC meters(6 KB)

Why I see 3~6uS displayed on LCD when I put the EC pen in air?
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3~6uS displayed on LCD when I put the EC pen(12 KB)

What is the reference system of your 850P ORP probe. Is it Ag/AgCl?
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What is the reference system of your 850P ORP prob(11 KB)

What pH meters can do in daily life?

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Many friends ask me what pH meter can help to improve daily life quality.

That is a good question so I collect many documents and summarize them into one simple chart as below.

Hope this is also helpful for you. If you need pH meters, you may check some options from AZ Instrument Corp


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What pH meters can do in daily life?(274 KB)

What kind of PH probes AZ could provide?

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For the Benchtop Meter, Portable pH Meter, AZ could provide the following accurate pH probe, 

1. 86P3: ATC pH probe

2. 86P2: pH probe without ATC function

3. 86P4: pH probe for Low Ion Strength without ATC function

4. 86P6: Full glass pH probe without ATC function

5. 86P7: Sharp tip pH probe without ATC function

6. 86P1: Flat surface pH probe without ATC function

7. 86P11: 6mm 
glass pH probe without ATC function



For the AZ Combo Water Testing Meters (ex: 86031, 86021, 84051), their pH probe is "863P". 



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What kind of PH probes AZ could provide?(114 KB)

D.O. probe troubleshooting

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1) Normal temp. but E03/E02 on D.O. Reason:

    a) Low on electrolyte

    Solution: See page 16 of operation manual to refill the electrolyte and run 100% calibration.


    b) Membrane defect

    Solution: See membrane change procedure and run 100% calibration.

    c) D.O. sensor damage

    Solution: Could not be fixed by user

2) E01 on temp. and D.O. reading Reason:


    a) The probe is disconnected

    Solution: Plug on the probe and make sure a good connect

    b) The wire inside the probe connector is broken.

    Solution: Could not be fixed by user.

    c) The inside wire of the probe is broken

    Solution: Could not be fixed by user.

3) E03 on temp . and E04 on D .O. reading Reason:


    a) The temp. sensor is damaged.

    Solution: Could not be fixed by user.

    b) The temp. related wire inside the probe connector is broken.

    Solution: Could not be fixed by user.

4) E17 on D.O. Reading Reason:


    a)100% saturation calibration error

    Solution: see membrane change procedure and run calibration again.

5) E31 on temp. and D.O. Reading Reason:


    a)The inside wire of the probe is broken

    Solution: Could not be fixed by user.

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AZ D.O. probe troubleshooting(214 KB)

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