Xylem MJK pHix Compact, Руководство пользователя

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pHix® Compact
EN 4.10 Version 2007
Buffer adjustment / Buffer liquid
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Buffer liquid
Buffer liquid is delivered as ready-to-use solutions with the pH values 4, 7 and
10.
During the buffer adjustment, pHix® Compact is calibrated in accordance with
the pH values of the buffer solutions. It is therefore important to use as accurate
buffer solutions as possible, i.e. to ensure that a pH 7 buffer solution in fact has
a pH value of exactly 7.
MJK delivers buffer solutions for both pH and redox calibration.
The pH value of the buffer liquid is dependent of the temperature, and the
stated pH value is valid at 77° F / 25° C.
Buffer liquid has a limited lifetime. Buffer liquid for pH 4 and 7 has a life time of
app. one year, and buffer liquid for pH 10 a somewhat shorter lifetime.
Note! Buffer liquid with pH 10 is very unstable and should therefore be
disposed of no later than one hour after it has been poured from the bottle.
Cleaning
Before starting buffer adjustment, wash the electrode in running water and
wipe it with a cloth before immersing it in the buffer solution. Washing and
wiping must be repeated between each step of the buffer adjustment.