hello dear Community,
first of all i hope that you are well and everything goes all right at your hometown. I hope that your town is dealing well with the pandemic-situation.
i have mused alot about the methods of the measure of pH - a comparison of the various mehtods:
we can measure the pH of a substance several ways.
A pH meter is one of the most common methods, and pH paper (also known as litmus paper or pH strips) is also a quick and dirty way. Other methods include titration, but it is tedious and requires detailed hands-on work.
what about a comparison of pH detection methods.
we have the pH Meter with the glass pH electrode. A pH meter has a membrane that allows acidic ions (H+) to pass through it creating a voltage. The meter associates each voltage with a particular pH value.
How it works: The higher the concentration of acid is, the more interesting are the results - the more ions that will pass through the membrane, thereby changing the value of the voltage.
This voltage change results in a higher pH value.
on the other handside: The Litmus Paper - It doesn't pass the litmus test - is a common phrase that has its origin in the use of litmus paper for pH detection. So far so good.
How it works: the so called strips of paper - they have so called littel (we ought to say very little) pH indicator molecules that subsequently change color upon contact with solution of a particular pH.
And this is the interesting point: Each color is indicative of a particular pH value. We can compare the paper to a standard chart where the colors show different pH values.
BTW; i have mused about the pH-Measurement with Atlas-pH sensors that are combined with ESP 32 or Arduino or RaspBerry-Pi. And i have also mused about the usage of DFRoot Sensor.
The bad thing is that all of these sensors need a permanend calibration - this is awful.
Question Can i go round this calibration - if i am going to use Litmus Paper that is checked and indicated with a opto-electronical process.
In other words -i take tha Litmus (pH) paper and let the opto-electronic stage generate a value - a certain voltage.- With that i will set a display that shows the current value of pH of my actual probe
How do you like this idea. Can this be done?
first of all i hope that you are well and everything goes all right at your hometown. I hope that your town is dealing well with the pandemic-situation.
i have mused alot about the methods of the measure of pH - a comparison of the various mehtods:
we can measure the pH of a substance several ways.
A pH meter is one of the most common methods, and pH paper (also known as litmus paper or pH strips) is also a quick and dirty way. Other methods include titration, but it is tedious and requires detailed hands-on work.
what about a comparison of pH detection methods.
we have the pH Meter with the glass pH electrode. A pH meter has a membrane that allows acidic ions (H+) to pass through it creating a voltage. The meter associates each voltage with a particular pH value.
How it works: The higher the concentration of acid is, the more interesting are the results - the more ions that will pass through the membrane, thereby changing the value of the voltage.
This voltage change results in a higher pH value.
on the other handside: The Litmus Paper - It doesn't pass the litmus test - is a common phrase that has its origin in the use of litmus paper for pH detection. So far so good.
How it works: the so called strips of paper - they have so called littel (we ought to say very little) pH indicator molecules that subsequently change color upon contact with solution of a particular pH.
And this is the interesting point: Each color is indicative of a particular pH value. We can compare the paper to a standard chart where the colors show different pH values.
BTW; i have mused about the pH-Measurement with Atlas-pH sensors that are combined with ESP 32 or Arduino or RaspBerry-Pi. And i have also mused about the usage of DFRoot Sensor.
The bad thing is that all of these sensors need a permanend calibration - this is awful.
Question Can i go round this calibration - if i am going to use Litmus Paper that is checked and indicated with a opto-electronical process.
In other words -i take tha Litmus (pH) paper and let the opto-electronic stage generate a value - a certain voltage.- With that i will set a display that shows the current value of pH of my actual probe
How do you like this idea. Can this be done?
