Ph metre

Question

Hello I want to build a non-contact pH meter. Is this possible? I would like to get detailed information and help on this subject.

anniel747 · Accepted Answer

Yes, simply use a pH test strip reader.

acdc90 · Answer

WHY do you want non contact and will inaccurate reading be acceptable

Miraç keyvan · Answer

I need a non-contact pH meter. Yes, up to 5% to 10% is acceptable

Miraç keyvan · Answer

Can you give some details? how to do it link video source etc.

anniel747 · Answer

https://youtu.be/MDQj6Xkjc8I

anniel747 · Answer

https://youtu.be/3UkhpTeoGHw

anniel747 · Answer

The QUANTOFIX Relax has an accuracy of &le; 10 %. You can also have a look at the Reflectoquant RQflex 20.

anniel747 · Answer

Both cheap and effective non-contact meters.

anniel747 · Answer

Yes, a simple pH test strip reader. Meter stays out of contact, no foodstuff contamination from the pastry cream. These are: milk, egg, sugar, starch, margarine, vanillin and liquid cake whipped cream

anniel747 · Answer

It's french. T hermometer = thermom&egrave;tre, voltmeter = voltm&egrave;tre and pH meter = pH-m&egrave;tre. 
 
 Wikip&eacute;dia

anniel747 · Answer

He doesn't want to have to clean the pH electrodes.

Miraç keyvan · Answer

Yes, it is something like this, but it is more professional and simple and useful because my sample is cake cream. The measurement needs to be more practical and easy, and at the same time, it should be a clear measurement, just like a digital pH meter.

Miraç keyvan · Answer

I want to clean pH probes with a simple method, but I could not find a simple and effective method. I can only do this with ultrasonic cleaners. I don't know what liquid to use for this.

Miraç keyvan · Answer

can you leave a link

anniel747 · Answer

An ultrasonic cleaner is quite simple and straightforward to use and your lab should already have one and buffer solution. I already answer this question in private: 
 24 Dec 2024

2:07 PM

Mira&ccedil; keyvan 
 
 Actually, I'm wondering if a normal pH sensor probe can be cleaned in an ultrasonic cleaner.

2:23 PM

More

anniel747 
 
 Yes, you can clean a pH sensor probe in an ultrasonic cleaner.

4:00 PM

Mira&ccedil; keyvan 
 
 Thank you very much. So, what temperature should it be? How many kHz should the liquid inside be? Is tap water acceptable as a cleaning fluid or what kind of liquid should be used?

4:31 PM

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anniel747 
 
 Use warm (~120&deg;F) 4.0 molar KCI (potassium chloride) solution or warm 4.01 pH buffer solution for pH electrodes unless you have a specific contaminant. Variable frequency ultrasonic cleaners are best. Only deionized or distilled water should be used for rinsing.

4:39 PM

Mira&ccedil; keyvan 
 
 Thank you very much, I have a few more questions for you. I'm sorry, I'm taking your time. I'm testing an oily and sticky sample, cake cream, so I use it with a probe test 15 times a day.

4:50 PM

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anniel747 
 
 Can you give a list of ingredients? Oil is better cleaned 1% (0.5N) HCl solution unless heavy contamination.

5:00 PM

Mira&ccedil; keyvan 
 
 pastry cream pH range is 7.0 to 5.0, milk, egg, sugar, starch are used, margarine, vanillin, liquid cake whipped cream, these are:

anniel747 
 
 I would use w arm 4.01 pH buffer solution as a start and see if there is specific residual contaminants.

5:12 PM

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anniel747 
 
 You should copy this conversation in the public thread, others may have expertise in the food industry.

5:12 PM

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anniel747 
 
 I don't.

5:13 PM

Mira&ccedil; keyvan 
 
 So, would it be a problem if we drop liquid detergent into tap water and clean it with an ultrasonic cleaner?

8:12 PM

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anniel747 
 
 Yes.

10:22 PM

Mira&ccedil; keyvan 
 
 How can this be a problem?

25 Dec 2024

12:43 PM

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anniel747 
 
 Tap water is dommageable to pH electrodes and has it's own contaminants.

1:18 PM

Mira&ccedil; keyvan 
 
 So, is there an easier, more practical way to clean this probe?

1:27 PM

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anniel747 
 
 Yes, use w arm 4.01 pH buffer solution.

1:27 PM

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anniel747 
 
 https://ca.hach.com/buffer-solution-ph-4-01-0-02-4-l/product-details?id=14533970669#

anniel747 · Answer

Don't you have internet? 
 
 www.mn-net.com/test-strip-reader-quantofix-relax-91346 
 
 Meter has no contact whit the sample. No pH electrodes cleaning required.

Miraç keyvan · Answer

Unfortunately, this system will not be used in the laboratory and pastry cream tests will be performed 20 times a day.

anniel747 · Answer

Your production line has no QC lab? T he QUANTOFIX Relax can run on 6 AA batteries and it can perform 50 tests per hour.

Ph metre

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