Thermo Fisher Scientific CyberScan pH 5000 - Manual (Page 101)

Instruction Manual CyberScan pH5500/ 5000
To standardize the meter with Manual Buffer Recognition
1. Touch
std on the pH measure screen to access the standardize
screen
2. Touch clear to delete a previous standardization. All pH
standardization values will be cleared. The meter will remain on
the standardization screen at this point.
OR
If the screen says “Not Standardization” proceed to step 3.
3. Immerse your rinsed electrode(s) in a buffer solution and stir
gently.
4. Touch
std again to standardize the meter using this buffer
5. Using the displayed keypad input the value of the buffer that you
are using to standardize the meter and then touch enter. The
meter will accept the value once it recognizes that the reading is
stable. At that time, STABLE will appear on the screen. A beaker
icon and the entered pH value will also appear on the screen at
this time. The meter will then return to the pH measure screen.
6. Touch std on the pH measure screen to access the
standardization screen and repeat steps 3 through 5 to
standardize with up to 5 buffers.
Updating a standardization with manual buffer recognition
You can update a standardization at any time. To update a
standardization with manual buffer recognition, place your electrode
in any of the buffers originally used to standardize the meter and
touch the std key on the touch screen twice. Then using the keypad
displayed on the screen, enter the value of the buffer and touch
enter. The value for that buffer will be updated and stored in the
meter’s memory. The time of standardization will also be updated and
stored in the meter’s memory. The time of standardization will also be
updated on the pH measure screen.
96