Starter 2100 Operation; Calibration; Buffer Group - OHAUS STARTER 2100 Manual De Instrucciones

STARTER 2100 Bench pH Meter
4

STARTER 2100 OPERATION

Standard procedure of pH measurement is as follows:
a) Connect pH (and Temperature if necessary) electrode to the meter and rinse
b) Prepare buffer
c) Calibrate pH electrode
d) Prepare sample & measure
e) Record measurement results
f) Rinse and properly store pH and other electrodes
pH electrode preparation: pH electrode should be rinsed with pure water before and
after using.
CAUTION Check if the electrode is physically damaged. (Be careful with the glass
bulb)
The pH electrode should be stored in the storage bottle.
After the pH electrode is put into the sample or buffer solution, the user should stir several
seconds then wait 30 to 60 seconds for the signal to stabilize, and then press the proper button
to operate (calibration or measurement).
WARNING Do not operate the equipment in hazardous environments. The
equipment is not explosion protected.
WARNING When using chemicals and solvents, comply with the instructions of the
chemical producer and the general lab safety rules.
4.1

Calibration

4.1.1

Buffer group

STARTER 2100 can perform 1 or 2-point calibrations. OHAUS recommends conducting a 2 point
calibration.
There is 1 buffer group (the US group) stored in the meter. The US buffer group is (at 25° C):
1.68 4.01
STARTER 2100 automatically corrects for the temperature dependence of the buffer pH values
given in the following table.
7.00 10.01
EN-9