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I dont know every think about electronic .
I just made mesure with two pH meters and conductivity meter
after Kati ani :
pH 4.49
conductivity : 3µSm/cmDavid
[quote=”Gerald Gantschnigg” post=3151][quote=”David” post=3149][…] manage to have very low pH around 2.72- 3 with conductivity like 12 to 20 µS/cm.[/quote]Never ever, I’m sorry! It’ not possible to gain very low conductivity at very low pH, this would violate some electrochemical laws. [/quote]
But, Gerald – what about the habitat data of the locations the fish come from? For example, Horst Linke reports a pH of 3,9 at a conductivity of 29 µS from the location of P. parvulus. How can this be if “it violates some electrochemical laws”?
[quote=”Davy” post=3152]Very interesting.
What is black peat? I know only blonde peat.[/quote]
Blonde peat is younger, it comes from the upper layer of moors and peat swamps. Black peat is the oldest layer from deeper strata.
Hallo!
Yes I think so!Funny how my thread has developed!
With what kind of measurement you all work to measure pH?
I m thinking of a photometer …I have a Martini Milwaukee two point electrical meter, but I have to “fix” it every week a new, that I don´t like so much …
And the drop tests have just a few steps and I must look out for the color of dark water .. so my painters head has to mix (or remix) the colors …..
I use this one now : pH/EC/TDS/°C Hanna Instruments Combo HI 98129
Very nice when i travel 😉And i have those too:
– Testeur Hanna pH ECO HI96107
– Hanna DiST ® testeur DiST 3, conductivité 0-1990 uS / cmDavid
I quote only this statement, because it seems too difficult to quote multiple statements:
[quote=”Stefanie” post=3154][…] How can this be if “it violates some electrochemical laws”?[/quote]
It generally is an error of measurement, not passing a criticism on someone. I’ve calibrated dozens of pH-meters several times, and if you ever find two ore more pH-meters which show the same values of a water solution though carefully calibrated before I will congratulate you.
One pH-step increases the acid concentration to the power of ten, this is significant especially at lower pH-values. If your measured values do not conform, it’s an error of measurement.I’ve appended a more detailed view of pH and corresponding EC, if youe measure a lower value of EC at a given pH, your given equipment, either the pH-meter or the conductometer, went wrong.
[quote=”Davy” post=3305]After kati ani water is charged by carbon dioxide.[/quote]Sure, but which situation is clarified by this circumstance? Have you read the postings before? If so you’re responding nonsense.
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