Thermo Fisher Scientific Alpha pH 550 - Manual (Page 31)

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Press ▲ or ▼ key to access other setup screens or press ▲ and ▼ key
simultaneously (escape) to return to measurement mode.
To exit from any intermediate steps, press ▲ and ▼ keys simultaneously
(escape). The pH Monitor returns to the first screen of temperature settings SET
ºCF.
5.4 Buffer Selection Settings
NOTE: The buffer selection setting is only available if the monitor is
configured for pH measurement mode.
This allows you to set the pH Monitor to accept either USA or NIST pH buffer
standard group during pH calibration.
Buffer Group pH Buffer Points
USA pH 4.01, 1.68, 7.00, 10.01 & 12.45
NIST pH 4.01, 1.68, 6.86, 9.18 & 12.45
SETUP
HOLD
SETUP
HOLD
SETUP
HOLD
ENT ENT
ENT
1 2
2
1 1 From pH measurement mode press ENT key to enter setup mode
as described in section 5.1. The LCD shows the first screen of
setup mode (OFS). Press
▲ or ▼ key to select buffer settings
screen (bUFF).
Press ENT key to access buffer settings (bUFF).
2 Selecting buffer group: The lower display shows the last
configured buffer group. Press
▲ or ▼ key to select the required
buffer group (‘USA’ or ‘nST’).