Thermo Fisher Scientific CyberScan pH 5000 - Manual (Page 97)

Instruction Manual CyberScan pH5500/ 5000
In this mode, you will able to measure the pH of a wide variety of
samples. Before measuring pH, you will need to standardize the
meter using buffers with known pH values. It is good practice to
standardize the meter frequently using a minimum of two buffers.
Using two buffers allows the meter to calculate and display an actual
slope for the electrode, and therefore produce more accurate
measurements. If there is no standardization in the memory of the
meter or only one buffer has been used to standardize the meter, the
slope value will appear as “NA”.
You can standardize your meter using automatic or manual buffer
recognition. With the Automatic buffer recognition activated, the
meter will automatically recognize the buffers from the chosen buffer
group and accept them when the meter recognizes the reading as
stable. When in manual buffer recognition mode, you must enter the
buffer value during the standardization procedure. The meter will
accept the manually entered buffer when it recognizes that the
measurement is stable. During the standardization procedure, you
may accept the buffer value before the meter recognizes it as stable
by touching std.
See page 47-48 to select desired buffer recognition.
At the basic procedural level the only setup options that you can
access are the buffer groups, the print interval and the display
resolution. If you need to change any other parameter such as Buffer
Recognition or Auto Read mode you will need to set the Procedural
level to Advanced in the system setup screen. Any values previously
saved in the pH setup screen of the advanced procedural level will
become the default values for basic procedural level.
Remember to setup your pH measuring mode parameters. Refer to
page 38 for pH setup instructions.
Connect the electrodes you will be using to the meter. See page 3 for
details.
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