This is the 6th vid on calibrating a pH meter Ive watched and no one ever tests the calibration by testing the solutions after calibration is complete. Does anyone know how science works? We are doomed as a society.
I have bought 2 off amazon that came with a tds meter... The tds on both set work well and are accurate. Both ph meters never work right. I calibrated them right, one would never work right at all it would only read 16.00 and 00.40. The 2nd took the calibration but never read right. It read the solutions right but never would read ph accurate. It was saying my tap was 6.13 and walmarts distilled being 8.83. Their distilled is 4.0
I agree these pens are junk. I have a shelf full of ph pens and I still use the dropper method! these pens usually wont give the same read out twice in a roe with the same solution mix. Garbage product !!
Mine did too, I removed the battery and cleared it. Then I calibrated in the 6.86, rinsed in clean distilled water then put it in the 4.01 solution pushed the calibration button then push it again to get it to 4.01 before the error shows up. Same with the 9.18 except you have to push the calibration button twice quickly to get to the 9.18 calibration. Had to play around with it for a while. Mine comes up with a end message after each calibration. I also found that if I held the button a little too long I got the error message. Pulling the top out with the battery seems to be the way to clear the error. If yours is hard wired to the battery compartment remove the batteries and reinstall them to clear the error.
PH pointed me to number 000, after drowning in the pool, It didn't move even though I put it in the water .. what should i do .. its still there but 000
Hi @mpjaoline, I used tap water to dissolve the buffer powder. Is it an issue? I have the same PH meter as yours and never used it yet. After calibrating the PH meter, when it is left open it reads 0.00 When it is in the 6.86 solution it reads 6.04 When it's in the 4.01 solution it reads 4.03 When it's in the 9.18 solution it reads 8.97 When it is in tap water it reads 6.05 Can I considered that the reading of my tap water PH level is accurate? If I am aiming 6.2 to 6.5 do I need to do anything ?
umm of course it's an issue. tap water is a totally unknown ph. it could be anywhere from 6-8.5 ish you're supposed to use distilled water because that is a known exact ph that calibration is worthless with tap water.
Is it off a constant 5ph or a random reading? Random is a bad sign; constant I think would be a bad calibration. Try cleaning the tip with distilled water and retry the calibration procedure.
Hi. I just bought the same tester as yours, the problem is I tried it again and again, the tester didn’t work anymore 😟 what should I do? Please help me.... thank you 😊
mpjaonline to start, it worked . And I left it for few seconds not wiped and not closed. So then I closed the lid and it didn’t work. I bought new batteries and put them in , but it always gives numbers 1600, not 0000 to start.
@@benedictatu4777 Mine reads 1600 in open air but when I dip it into water it reads the correct PH. Last thing you can try is to clean the tip with distilled water.
mpjaonline ohh I see as I don’t have distilled water yet. That’s maybe the problem. Thank you so much and the informative video you posted. I’ll keep this video..x
I bought one a yr ago and worked fine. Havent used it for about 8 months and now trying to use it again and everytime I drop it in the water it kepts running numbers constantly and wont stop? Any idea whats going on? ?
You do realise you've made a video that shows just how crap these pens are and that even immediately... like the very nano second after recalibrating it gives a totally wrong reading!?!?
Uh oh ! Mine said to use distilled water to mix the solutions . Waiting for them to dissolve now . Does this mean it won't be accurate when I calibrate it ?
Yes distilled water to mix the solution is good and for cleaning the tip, The problem is if you try to measure the PH of pure distilled water is when you get inaccurate readings. Thank You MPJA Inc
Also, as importantly, if you believe the ph meter is off due to distilled water, simply buy a ph up and ph down blue and orange water kit and test it in the small vile they give you, cheap too. This way you know you’ve tested it two ways…it works great…..
It comes from the factory calibrated. The data sheet states: Re-calibration is required in the following conditions: 1: lengthy period of inactivity 2: Very frequent use 3: Testing requirements is very high 4: The “cal” button was pushed and the electrode exposed to the air for extended period.
So if already calibrated at warehouse it sits so now when we buy we have to recalibrate maybe more solution should come with it?! The temperature is like already calibrated but why 8degrees off? Maybe not same product but same idea!
This is the best/clearest calibration explanation I have seen on youtube. Thank you. Just great!
This is the 6th vid on calibrating a pH meter Ive watched and no one ever tests the calibration by testing the solutions after calibration is complete. Does anyone know how science works? We are doomed as a society.
How often does it need calibrating.
I have bought 2 off amazon that came with a tds meter... The tds on both set work well and are accurate. Both ph meters never work right. I calibrated them right, one would never work right at all it would only read 16.00 and 00.40. The 2nd took the calibration but never read right. It read the solutions right but never would read ph accurate. It was saying my tap was 6.13 and walmarts distilled being 8.83. Their distilled is 4.0
Beau Bridgeman you are exactly correct! I bought the combo set and the PH tester is garbage! Cost me unmentionable time and money!!
Digital ph meter can't measure ph of pure distilled water because there are no ions in the solution for the sensor to work.
@@eltelle my apera does
Hi ,why mine keep saying ERR ?and stuck on number 1400
This looks like hell what do you do with it after you do all this
when u calibrate it in the 2nd and 3rd solution arnt you just recalbirating it ? im pretty sure you are
you can check it with the other solutions but you dont have to keep recalbirating it
It helps to average an upper and lower reading for an overall accuracy.
I agree these pens are junk. I have a shelf full of ph pens and I still use the dropper method! these pens usually wont give the same read out twice in a roe with the same solution mix. Garbage product !!
You only need to do it once. if you have an idea what the PH of solution you are going to test you can calibrate first with the powder nearest to it
My pen shows 6.86 but it keeps flashing (about 15 times) without stopping and then shows Err on the screen. Tried over and over again, same problem
Yeah me too
Mine did too, I removed the battery and cleared it. Then I calibrated in the 6.86, rinsed in clean distilled water then put it in the 4.01 solution pushed the calibration button then push it again to get it to 4.01 before the error shows up. Same with the 9.18 except you have to push the calibration button twice quickly to get to the 9.18 calibration. Had to play around with it for a while. Mine comes up with a end message after each calibration. I also found that if I held the button a little too long I got the error message. Pulling the top out with the battery seems to be the way to clear the error. If yours is hard wired to the battery compartment remove the batteries and reinstall them to clear the error.
@@jameswilliford5478 will give it a try. Thanks for taking the trouble to explain 🙏
hi, a new one require to be calibrated?
Thank you for the video. I just did mine and my ph 6.86 gave me 7.89 but the one of 4.00 gave 4.02. Please what can I do?
how come mine keeps saying 2.43 when i calibarted it already?
i tested distilled water at 8 to 9.. but when i added baking soda it dropped to 6 to 7 .. this does not work
I just bought it, i have to calibrate it first?
Can you save the mixed solutions for later use?
No
PH pointed me to number 000, after drowning in the pool, It didn't move even though I put it in the water .. what should i do .. its still there but 000
If you completely submerged the whole device you broke it.
Can this kind of pH meter be used for dried food?
Hi @mpjaoline, I used tap water to dissolve the buffer powder. Is it an issue?
I have the same PH meter as yours and never used it yet.
After calibrating the PH meter, when it is left open it reads 0.00
When it is in the 6.86 solution it reads 6.04
When it's in the 4.01 solution it reads 4.03
When it's in the 9.18 solution it reads 8.97
When it is in tap water it reads 6.05
Can I considered that the reading of my tap water PH level is accurate?
If I am aiming 6.2 to 6.5 do I need to do anything ?
umm of course it's an issue. tap water is a totally unknown ph. it could be anywhere from 6-8.5 ish
you're supposed to use distilled water because that is a known exact ph
that calibration is worthless with tap water.
Bought this meter….it is very erratic and the readings are unreliable. Went back to test strips…
So what good is that thing???
Do i have to use the PH powder when calibrating ph level safety on water?
You can easily find it by searching “ 4.00 6.86 9.18 Ph Buffer Solution Powder Water Quality Tester Calibration “
How do i know if the water is exactly 77 degrees like it says
@@mpjaonline does the water need to be 77 degrees?
@@kinleyiscute The temperature is important with the calibrating powder but for normal operation it can be between 0-60 degree “C”
I just purchased this product and calibrated it but the readings are off by like 5 or more please help
Is it off a constant 5ph or a random reading? Random is a bad sign; constant I think would be a bad calibration. Try cleaning the tip with distilled water and retry the calibration procedure.
Hi. I just bought the same tester as yours, the problem is I tried it again and again, the tester didn’t work anymore 😟 what should I do? Please help me.... thank you 😊
To start did it ever work properly, next is it not working at all or giving bad readings? If not at all working it is usually the batteries.
mpjaonline to start, it worked . And I left it for few seconds not wiped and not closed. So then I closed the lid and it didn’t work. I bought new batteries and put them in , but it always gives numbers 1600, not 0000 to start.
@@benedictatu4777 Mine reads 1600 in open air but when I dip it into water it reads the correct PH. Last thing you can try is to clean the tip with distilled water.
mpjaonline ohh I see as I don’t have distilled water yet. That’s maybe the problem. Thank you so much and the informative video you posted. I’ll keep this video..x
Thanks
I got pissed off with this PH pen with erratic readings. I returned it back to Amazon within 24 hrs & got my money back. Phheeew.
thank you
I bought one a yr ago and worked fine. Havent used it for about 8 months and now trying to use it again and everytime I drop it in the water it kepts running numbers constantly and wont stop? Any idea whats going on? ?
Having some problem and I don't no
Yeah buy a good one
need new batteries
You do realise you've made a video that shows just how crap these pens are and that even immediately... like the very nano second after recalibrating it gives a totally wrong reading!?!?
agree,
What is a better option
z3ro7o there isn’t unless you buy a fancy ph probe device. I’ve had about 4 of these and they NEVER give accurate results. Shame really
you can get these on ebay for about £4 they are crap
Im going to be using my meter for a salt water tank. Do you know much about this?
I’m not an expert on saltwater tanks but I did a search and found a form on the subject.
www.reefcentral.com/forums/showthread.php?t=2626944
Good sharing
Uh oh ! Mine said to use distilled water to mix the solutions . Waiting for them to dissolve now . Does this mean it won't be accurate when I calibrate it ?
Yes distilled water to mix the solution is good and for cleaning the tip, The problem is if you try to measure the PH of pure distilled water is when you get inaccurate readings.
Thank You MPJA Inc
Also, as importantly, if you believe the ph meter is off due to distilled water, simply buy a ph up and ph down blue and orange water kit and test it in the small vile they give you, cheap too. This way you know you’ve tested it two ways…it works great…..
Did mine and it only reads 7 and does move
If it reads the same between two different liquids of different ph, then I think the problem is in the unit.
So after calibrating it's good to go???
It comes from the factory calibrated. The data sheet states: Re-calibration is required in the following conditions: 1: lengthy period of inactivity 2: Very frequent use 3: Testing requirements is very high 4: The “cal” button was pushed and the electrode exposed to the air for extended period.
So if already calibrated at warehouse it sits so now when we buy we have to recalibrate maybe more solution should come with it?!
The temperature is like already calibrated but why 8degrees off? Maybe not same product but same idea!
junk - does not calibrate ( yes used clean containers and distilled water )
These are the worst pens ever get one you can adjust the calibration manually
F*ck you tube. At first this was showing links to Amazon, but apparently due to their new rules of service they took your links out
Cheap crap
I bought a cheap one (vivosun) that works fine; what problem did you have? o:
Junk
These $10-$20 ph meters are junk. You get what you pay for.
These cheap Chinese built units are complete JUNK!
Worst product ever..buy yourself a proper one. Mine broke after 1 month.
Junk pens. Go to blue lab