ph meter उदाहरण वाक्य

Therefore, the glass electrode can be used only with a high input-impedance measuring device like a pH meter, or, more generically, a high input-impedance voltmeter which is called an electrometer.
On April 8, 1935, Beckman's renamed National Technical Laboratories focused on the making of scientific instruments, with the Arthur H . Thomas Company as a distributor for its pH meter.
Radiometer in Denmark was founded in 1935, and began marketing a pH meter for medical use around 1936, but " the development of automatic pH-meters for industrial purposes was neglected.
Practically, it's the easiest and most error free way to directly measure the concentration of an acid / base without using an actual pH meter ( that I know of ).
:: : * shudder *-there are things much, much, much better than pH meters-the fact that you mentioned a spectrophotometer makes me wonder whether this is for a paper or such?

ETI has expanded its product line to include a large variety of temperature measuring instruments, such as thermometers, data loggers, humidity and dew point meters, pH meters and damp / moisture meters.
To implement this approach to calibration, the electrode is first immersed in a standard solution and the reading on a pH meter is adjusted to be equal to the standard buffer's value.
Arnold Orville Beckman, initiated December 1922, was the inventor of the first pH meter and founder of the first silicon transistor company in California ( thus giving birth to Silicon valley ).
For the Beckman company, the DU was one of three foundational inventions-the pH meter, the DU spectrophotometer, and the helipot potentiometer-that established the company on a secure financial basis and enabled it to expand.
The pH meter is an important device for measuring the pH of a solution, and by 11 May 1939, sales were successful enough that Beckman left Caltech to become the full-time president of National Technical Laboratories.