Hanna Instruments HI 4002 - Manual (Page 12)

12
Procedure
1) Follow sections VIII and IX to prepare sensors for
measurement.
2) Follow section VI to prepare standards/ solution. Stan-
dards should bracket and fall within the range of
interest.
Two mL HI 4000-00 ISA, is added to 100 mL of both
samples and standards Add stir bar and mix before
taking measurements.
3) Follow section VII; General Guidelines to optimize test
set-up.
4) During calibration it is best to start with lower concen-
tration samples first. Wait for a stable measurement
before recording values. Slightly longer equilibra-
tions are required at lower concentrations .
5) To prevent carry over and contamination of samples,
rinse sensors with DIW and dap dry between samples.
Typical Linearity for HI 4002 and HI 4102 Bromide
sensors
-150
-100
-50
0
50
100
150
200
0 1 2 3 4 5 6 7
-Log of Molar Concentration
mV